61864975 has 12 divisors (see below), whose sum is σ = 79358760. Its totient is φ = 47784800.

The previous prime is 61864967. The next prime is 61864997. The reversal of 61864975 is 57946816.

It is not a de Polignac number, because 61864975 - 2³ = 61864967 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41941 + ... + 43390.

It is an arithmetic number, because the mean of its divisors is an integer number (6613230).

Almost surely, 2^61864975 is an apocalyptic number.

61864975 is a deficient number, since it is larger than the sum of its proper divisors (17493785).

61864975 is a wasteful number, since it uses less digits than its factorization.

61864975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85370 (or 85365 counting only the distinct ones).

The product of its digits is 362880, while the sum is 46.

The square root of 61864975 is about 7865.4291046325. The cubic root of 61864975 is about 395.5016326144.

The spelling of 61864975 in words is "sixty-one million, eight hundred sixty-four thousand, nine hundred seventy-five".