61944907 has 2 divisors, whose sum is σ = 61944908. Its totient is φ = 61944906.

The previous prime is 61944901. The next prime is 61944941. The reversal of 61944907 is 70944916.

It is a happy number.

61944907 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61944907 - 2¹⁵ = 61912139 is a prime.

It is a super-3 number, since 3×61944907³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61944907.

It is not a weakly prime, because it can be changed into another prime (61944901) 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 as a sum of consecutive naturals, namely, 30972453 + 30972454.

It is an arithmetic number, because the mean of its divisors is an integer number (30972454).

Almost surely, 2^61944907 is an apocalyptic number.

61944907 is a deficient number, since it is larger than the sum of its proper divisors (1).

61944907 is an equidigital number, since it uses as much as digits as its factorization.

61944907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 61944907 is about 7870.5086874992. The cubic root of 61944907 is about 395.6718939029.

Subtracting 61944907 from its reverse (70944916), we obtain a palindrome (9000009).

The spelling of 61944907 in words is "sixty-one million, nine hundred forty-four thousand, nine hundred seven".