61310657 has 8 divisors (see below), whose sum is σ = 61995936. Its totient is φ = 60629472.

The previous prime is 61310629. The next prime is 61310671. The reversal of 61310657 is 75601316.

61310657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61310657 - 2⁸ = 61310401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61310057) 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 7 ways as a sum of consecutive naturals, for example, 36173 + ... + 37829.

It is an arithmetic number, because the mean of its divisors is an integer number (7749492).

Almost surely, 2^61310657 is an apocalyptic number.

It is an amenable number.

61310657 is a deficient number, since it is larger than the sum of its proper divisors (685279).

61310657 is a wasteful number, since it uses less digits than its factorization.

61310657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2047.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 61310657 is about 7830.1121958756. The cubic root of 61310657 is about 394.3168386866.

The spelling of 61310657 in words is "sixty-one million, three hundred ten thousand, six hundred fifty-seven".