65284720 has 40 divisors (see below), whose sum is σ = 152133120. Its totient is φ = 26054400.

The previous prime is 65284697. The next prime is 65284763. The reversal of 65284720 is 2748256.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56145 + ... + 57295.

It is an arithmetic number, because the mean of its divisors is an integer number (3803328).

Almost surely, 2^65284720 is an apocalyptic number.

It is an amenable number.

65284720 is an abundant number, since it is smaller than the sum of its proper divisors (86848400).

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

65284720 is a wasteful number, since it uses less digits than its factorization.

65284720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1873 (or 1867 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 65284720 is about 8079.8960389352. The cubic root of 65284720 is about 402.6587879594.

Subtracting from 65284720 its reverse (2748256), we obtain a square (62536464 = 7908²).

The spelling of 65284720 in words is "sixty-five million, two hundred eighty-four thousand, seven hundred twenty".