61672901 has 4 divisors (see below), whose sum is σ = 62416032. Its totient is φ = 60929772.

The previous prime is 61672873. The next prime is 61672909. The reversal of 61672901 is 10927616.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-61672901 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61672909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371441 + ... + 371606.

It is an arithmetic number, because the mean of its divisors is an integer number (15604008).

Almost surely, 2^61672901 is an apocalyptic number.

It is an amenable number.

61672901 is a deficient number, since it is larger than the sum of its proper divisors (743131).

61672901 is an equidigital number, since it uses as much as digits as its factorization.

61672901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743130.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 61672901 is about 7853.2095986291. The cubic root of 61672901 is about 395.0918997836.

The spelling of 61672901 in words is "sixty-one million, six hundred seventy-two thousand, nine hundred one".