65982220 has 24 divisors (see below), whose sum is σ = 138834864. Its totient is φ = 26341056.

The previous prime is 65982209. The next prime is 65982227. The reversal of 65982220 is 2228956.

It is a super-2 number, since 2×65982220² = 8707306712256800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65982227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8179 + ... + 14101.

It is an arithmetic number, because the mean of its divisors is an integer number (5784786).

Almost surely, 2^65982220 is an apocalyptic number.

It is an amenable number.

65982220 is an abundant number, since it is smaller than the sum of its proper divisors (72852644).

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

65982220 is a wasteful number, since it uses less digits than its factorization.

65982220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6489 (or 6487 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 65982220 is about 8122.9440475729. The cubic root of 65982220 is about 404.0877092840.

The spelling of 65982220 in words is "sixty-five million, nine hundred eighty-two thousand, two hundred twenty".