80772066 has 80 divisors (see below), whose sum is σ = 193929120. Its totient is φ = 25038720.

The previous prime is 80772037. The next prime is 80772071. The reversal of 80772066 is 66027708.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 80772066.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 382701 + ... + 382911.

It is an arithmetic number, because the mean of its divisors is an integer number (2424114).

Almost surely, 2^80772066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80772066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96964560).

80772066 is an abundant number, since it is smaller than the sum of its proper divisors (113157054).

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

80772066 is a wasteful number, since it uses less digits than its factorization.

80772066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381 (or 372 counting only the distinct ones).

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

The square root of 80772066 is about 8987.3280790233. The cubic root of 80772066 is about 432.2686407805.

The spelling of 80772066 in words is "eighty million, seven hundred seventy-two thousand, sixty-six".