65876820 has 24 divisors (see below), whose sum is σ = 184455264. Its totient is φ = 17567136.

The previous prime is 65876813. The next prime is 65876849. The reversal of 65876820 is 2867856.

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, 548914 + ... + 549033.

It is an arithmetic number, because the mean of its divisors is an integer number (7685636).

Almost surely, 2^65876820 is an apocalyptic number.

65876820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65876820 is an abundant number, since it is smaller than the sum of its proper divisors (118578444).

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

65876820 is a wasteful number, since it uses less digits than its factorization.

65876820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097959 (or 1097957 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 65876820 is about 8116.4536590804. The cubic root of 65876820 is about 403.8724313758.

The spelling of 65876820 in words is "sixty-five million, eight hundred seventy-six thousand, eight hundred twenty".