61656375 has 32 divisors (see below), whose sum is σ = 111930624. Its totient is φ = 29892000.

The previous prime is 61656373. The next prime is 61656379. The reversal of 61656375 is 57365616.

It is not a de Polignac number, because 61656375 - 2¹ = 61656373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61656373) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3349 + ... + 11598.

It is an arithmetic number, because the mean of its divisors is an integer number (3497832).

Almost surely, 2^61656375 is an apocalyptic number.

61656375 is a deficient number, since it is larger than the sum of its proper divisors (50274249).

61656375 is a wasteful number, since it uses less digits than its factorization.

61656375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14976 (or 14966 counting only the distinct ones).

The product of its digits is 113400, while the sum is 39.

The square root of 61656375 is about 7852.1573468697. The cubic root of 61656375 is about 395.0566067461.

The spelling of 61656375 in words is "sixty-one million, six hundred fifty-six thousand, three hundred seventy-five".