65983257 has 24 divisors (see below), whose sum is σ = 101556000. Its totient is φ = 41162688.

The previous prime is 65983241. The next prime is 65983261. The reversal of 65983257 is 75238956.

It is a happy number.

65983257 is a `hidden beast` number, since 6 + 598 + 3 + 2 + 57 = 666.

It is not a de Polignac number, because 65983257 - 2⁴ = 65983241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65983277) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11869 + ... + 16517.

It is an arithmetic number, because the mean of its divisors is an integer number (4231500).

Almost surely, 2^65983257 is an apocalyptic number.

It is an amenable number.

65983257 is a deficient number, since it is larger than the sum of its proper divisors (35572743).

65983257 is a wasteful number, since it uses less digits than its factorization.

65983257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4757 (or 4754 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 65983257 is about 8123.0078788587. The cubic root of 65983257 is about 404.0898262016.

The spelling of 65983257 in words is "sixty-five million, nine hundred eighty-three thousand, two hundred fifty-seven".