65669975 has 12 divisors (see below), whose sum is σ = 93063984. Its totient is φ = 45030720.

The previous prime is 65669971. The next prime is 65669999. The reversal of 65669975 is 57996656.

It is not a de Polignac number, because 65669975 - 2² = 65669971 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 (65669971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187454 + ... + 187803.

It is an arithmetic number, because the mean of its divisors is an integer number (7755332).

Almost surely, 2^65669975 is an apocalyptic number.

65669975 is a deficient number, since it is larger than the sum of its proper divisors (27394009).

65669975 is a wasteful number, since it uses less digits than its factorization.

65669975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375274 (or 375269 counting only the distinct ones).

The product of its digits is 3061800, while the sum is 53.

The square root of 65669975 is about 8103.7013148314. The cubic root of 65669975 is about 403.4492851669.

The spelling of 65669975 in words is "sixty-five million, six hundred sixty-nine thousand, nine hundred seventy-five".