80621562 has 24 divisors (see below), whose sum is σ = 187569216. Its totient is φ = 23034648.

The previous prime is 80621561. The next prime is 80621609. The reversal of 80621562 is 26512608.

It is not an unprimeable number, because it can be changed into a prime (80621561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136818 + ... + 137405.

It is an arithmetic number, because the mean of its divisors is an integer number (7815384).

Almost surely, 2^80621562 is an apocalyptic number.

80621562 is an abundant number, since it is smaller than the sum of its proper divisors (106947654).

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

80621562 is a wasteful number, since it uses less digits than its factorization.

80621562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274242 (or 274235 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 80621562 is about 8978.9510523223. The cubic root of 80621562 is about 431.9999892833. Note that the first 4 decimals are identical.

The spelling of 80621562 in words is "eighty million, six hundred twenty-one thousand, five hundred sixty-two".