65873520 has 80 divisors (see below), whose sum is σ = 226905120. Its totient is φ = 17565696.

The previous prime is 65873519. The next prime is 65873537. The reversal of 65873520 is 2537856.

65873520 is a `hidden beast` number, since 65 + 8 + 73 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 13089 + ... + 17408.

It is an arithmetic number, because the mean of its divisors is an integer number (2836314).

Almost surely, 2^65873520 is an apocalyptic number.

65873520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65873520 is an abundant number, since it is smaller than the sum of its proper divisors (161031600).

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

65873520 is a wasteful number, since it uses less digits than its factorization.

65873520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30519 (or 30507 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 65873520 is about 8116.2503657785. The cubic root of 65873520 is about 403.8656874696.

The spelling of 65873520 in words is "sixty-five million, eight hundred seventy-three thousand, five hundred twenty".