64983765 has 32 divisors (see below), whose sum is σ = 129632256. Its totient is φ = 27005760.

The previous prime is 64983749. The next prime is 64983767. The reversal of 64983765 is 56738946.

It is not a de Polignac number, because 64983765 - 2⁴ = 64983749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64983767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26977 + ... + 29286.

It is an arithmetic number, because the mean of its divisors is an integer number (4051008).

Almost surely, 2^64983765 is an apocalyptic number.

It is an amenable number.

64983765 is a deficient number, since it is larger than the sum of its proper divisors (64648491).

64983765 is a wasteful number, since it uses less digits than its factorization.

64983765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56289.

The product of its digits is 1088640, while the sum is 48.

The square root of 64983765 is about 8061.2508334625. The cubic root of 64983765 is about 402.0390979522.

The spelling of 64983765 in words is "sixty-four million, nine hundred eighty-three thousand, seven hundred sixty-five".