65975655 has 16 divisors (see below), whose sum is σ = 106323840. Its totient is φ = 34932768.

The previous prime is 65975653. The next prime is 65975669. The reversal of 65975655 is 55657956.

It is a happy number.

It is not a de Polignac number, because 65975655 - 2¹ = 65975653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65975653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13737 + ... + 17906.

It is an arithmetic number, because the mean of its divisors is an integer number (6645240).

Almost surely, 2^65975655 is an apocalyptic number.

65975655 is a deficient number, since it is larger than the sum of its proper divisors (40348185).

65975655 is a wasteful number, since it uses less digits than its factorization.

65975655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31790.

The product of its digits is 1417500, while the sum is 48.

The square root of 65975655 is about 8122.5399352666. The cubic root of 65975655 is about 404.0743070685.

The spelling of 65975655 in words is "sixty-five million, nine hundred seventy-five thousand, six hundred fifty-five".