80767620 has 72 divisors (see below), whose sum is σ = 250233984. Its totient is φ = 21077568.

The previous prime is 80767607. The next prime is 80767649. The reversal of 80767620 is 2676708.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3687 + ... + 13233.

It is an arithmetic number, because the mean of its divisors is an integer number (3475472).

Almost surely, 2^80767620 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 80767620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125116992).

80767620 is an abundant number, since it is smaller than the sum of its proper divisors (169466364).

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

80767620 is a wasteful number, since it uses less digits than its factorization.

80767620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9609 (or 9604 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 80767620 is about 8987.0807273552. The cubic root of 80767620 is about 432.2607094013.

The spelling of 80767620 in words is "eighty million, seven hundred sixty-seven thousand, six hundred twenty".