61625317 has 4 divisors (see below), whose sum is σ = 66365740. Its totient is φ = 56884896.

The previous prime is 61625309. The next prime is 61625329. The reversal of 61625317 is 71352616.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17986081 + 43639236 = 4241^2 + 6606^2 .

It is a cyclic number.

It is not a de Polignac number, because 61625317 - 2³ = 61625309 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 (61625917) 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, 2370192 + ... + 2370217.

It is an arithmetic number, because the mean of its divisors is an integer number (16591435).

Almost surely, 2^61625317 is an apocalyptic number.

It is an amenable number.

61625317 is a deficient number, since it is larger than the sum of its proper divisors (4740423).

61625317 is a wasteful number, since it uses less digits than its factorization.

61625317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4740422.

The product of its digits is 7560, while the sum is 31.

The square root of 61625317 is about 7850.1794247011. The cubic root of 61625317 is about 394.9902620042.

The spelling of 61625317 in words is "sixty-one million, six hundred twenty-five thousand, three hundred seventeen".