65683240 has 64 divisors (see below), whose sum is σ = 178848000. Its totient is φ = 21193728.

The previous prime is 65683201. The next prime is 65683243. The reversal of 65683240 is 4238656.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 65683196 and 65683205.

It is not an unprimeable number, because it can be changed into a prime (65683243) 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, 2140 + ... + 11659.

It is an arithmetic number, because the mean of its divisors is an integer number (2794500).

Almost surely, 2^65683240 is an apocalyptic number.

It is an amenable number.

65683240 is an abundant number, since it is smaller than the sum of its proper divisors (113164760).

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

65683240 is a wasteful number, since it uses less digits than its factorization.

65683240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13834 (or 13830 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 65683240 is about 8104.5197266710. The cubic root of 65683240 is about 403.4764482373.

It can be divided in two parts, 65 and 683240, that multiplied together give a triangular number (44410600 = T₉₄₂₄).

The spelling of 65683240 in words is "sixty-five million, six hundred eighty-three thousand, two hundred forty".