65650980 has 24 divisors (see below), whose sum is σ = 183822912. Its totient is φ = 17506912.

The previous prime is 65650979. The next prime is 65651063. The reversal of 65650980 is 8905656.

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, 547032 + ... + 547151.

It is an arithmetic number, because the mean of its divisors is an integer number (7659288).

Almost surely, 2^65650980 is an apocalyptic number.

65650980 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65650980 is an abundant number, since it is smaller than the sum of its proper divisors (118171932).

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

65650980 is a wasteful number, since it uses less digits than its factorization.

65650980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094195 (or 1094193 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 65650980 is about 8102.5292347513. The cubic root of 65650980 is about 403.4103822630.

The spelling of 65650980 in words is "sixty-five million, six hundred fifty thousand, nine hundred eighty".