80785772 has 6 divisors (see below), whose sum is σ = 141375108. Its totient is φ = 40392884.

The previous prime is 80785769. The next prime is 80785787. The reversal of 80785772 is 27758708.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10098218 + ... + 10098225.

It is an arithmetic number, because the mean of its divisors is an integer number (23562518).

Almost surely, 2^80785772 is an apocalyptic number.

It is an amenable number.

80785772 is a deficient number, since it is larger than the sum of its proper divisors (60589336).

80785772 is a wasteful number, since it uses less digits than its factorization.

80785772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20196447 (or 20196445 counting only the distinct ones).

The product of its (nonzero) digits is 219520, while the sum is 44.

The square root of 80785772 is about 8988.0905647418. The cubic root of 80785772 is about 432.2930895749.

The spelling of 80785772 in words is "eighty million, seven hundred eighty-five thousand, seven hundred seventy-two".