65457939 has 16 divisors (see below), whose sum is σ = 92579328. Its totient is φ = 40996992.

The previous prime is 65457937. The next prime is 65457943. The reversal of 65457939 is 93975456.

It is not a de Polignac number, because 65457939 - 2¹ = 65457937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65457937) 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, 44514 + ... + 45960.

It is an arithmetic number, because the mean of its divisors is an integer number (5786208).

Almost surely, 2^65457939 is an apocalyptic number.

65457939 is a deficient number, since it is larger than the sum of its proper divisors (27121389).

65457939 is a wasteful number, since it uses less digits than its factorization.

65457939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2354.

The product of its digits is 1020600, while the sum is 48.

The square root of 65457939 is about 8090.6080735628. The cubic root of 65457939 is about 403.0145963635.

The spelling of 65457939 in words is "sixty-five million, four hundred fifty-seven thousand, nine hundred thirty-nine".