65680500 has 48 divisors (see below), whose sum is σ = 191265984. Its totient is φ = 17514400.

The previous prime is 65680493. The next prime is 65680519. The reversal of 65680500 is 508656.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20394 + ... + 23393.

It is an arithmetic number, because the mean of its divisors is an integer number (3984708).

Almost surely, 2^65680500 is an apocalyptic number.

65680500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65680500 is an abundant number, since it is smaller than the sum of its proper divisors (125585484).

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

65680500 is a wasteful number, since it uses less digits than its factorization.

65680500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43809 (or 43797 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 65680500 is about 8104.3506834292. The cubic root of 65680500 is about 403.4708377709.

The spelling of 65680500 in words is "sixty-five million, six hundred eighty thousand, five hundred".