65380560 has 80 divisors (see below), whose sum is σ = 231639936. Its totient is φ = 14943744.

The previous prime is 65380547. The next prime is 65380561. The reversal of 65380560 is 6508356.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65380561) 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, 17779 + ... + 21138.

Almost surely, 2^65380560 is an apocalyptic number.

65380560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65380560 is an abundant number, since it is smaller than the sum of its proper divisors (166259376).

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

65380560 is a wasteful number, since it uses less digits than its factorization.

65380560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38940 (or 38934 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 65380560 is about 8085.8246332703. The cubic root of 65380560 is about 402.8557301610.

The spelling of 65380560 in words is "sixty-five million, three hundred eighty thousand, five hundred sixty".