61944917 has 4 divisors (see below), whose sum is σ = 62869536. Its totient is φ = 61020300.

The previous prime is 61944907. The next prime is 61944941. The reversal of 61944917 is 71944916.

61944917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61944917 - 2⁴ = 61944901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61944907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 462209 + ... + 462342.

It is an arithmetic number, because the mean of its divisors is an integer number (15717384).

Almost surely, 2^61944917 is an apocalyptic number.

61944917 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

61944917 is a deficient number, since it is larger than the sum of its proper divisors (924619).

61944917 is an equidigital number, since it uses as much as digits as its factorization.

61944917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924618.

The product of its digits is 54432, while the sum is 41.

The square root of 61944917 is about 7870.5093227821. The cubic root of 61944917 is about 395.6719151945.

Subtracting 61944917 from its reverse (71944916), we obtain a palindrome (9999999).

It can be divided in two parts, 6194 and 4917, that added together give a palindrome (11111).

The spelling of 61944917 in words is "sixty-one million, nine hundred forty-four thousand, nine hundred seventeen".