80621712 has 120 divisors (see below), whose sum is σ = 241155200. Its totient is φ = 25069824.

The previous prime is 80621677. The next prime is 80621713. The reversal of 80621712 is 21712608.

It is not an unprimeable number, because it can be changed into a prime (80621713) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 215958 + ... + 216330.

Almost surely, 2^80621712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80621712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120577600).

80621712 is an abundant number, since it is smaller than the sum of its proper divisors (160533488).

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

80621712 is a wasteful number, since it uses less digits than its factorization.

80621712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485 (or 476 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 80621712 is about 8978.9594051872. The cubic root of 80621712 is about 432.0002572015. Note that the first 3 decimals are identical.

The spelling of 80621712 in words is "eighty million, six hundred twenty-one thousand, seven hundred twelve".