65829540 has 72 divisors (see below), whose sum is σ = 214425792. Its totient is φ = 15046080.

The previous prime is 65829539. The next prime is 65829557. The reversal of 65829540 is 4592856.

It is a super-2 number, since 2×65829540² = 8667056673223200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8256 + ... + 14135.

It is an arithmetic number, because the mean of its divisors is an integer number (2978136).

Almost surely, 2^65829540 is an apocalyptic number.

65829540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65829540 is an abundant number, since it is smaller than the sum of its proper divisors (148596252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65829540 is a wasteful number, since it uses less digits than its factorization.

65829540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22417 (or 22408 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 65829540 is about 8113.5405341934. The cubic root of 65829540 is about 403.7757880821.

The spelling of 65829540 in words is "sixty-five million, eight hundred twenty-nine thousand, five hundred forty".