80877788 has 24 divisors (see below), whose sum is σ = 147292992. Its totient is φ = 38826944.

The previous prime is 80877787. The next prime is 80877799. The reversal of 80877788 is 88777808.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80877787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5906 + ... + 14022.

It is an arithmetic number, because the mean of its divisors is an integer number (6137208).

Almost surely, 2^80877788 is an apocalyptic number.

It is an amenable number.

80877788 is a deficient number, since it is larger than the sum of its proper divisors (66415204).

80877788 is a wasteful number, since it uses less digits than its factorization.

80877788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8221 (or 8219 counting only the distinct ones).

The product of its (nonzero) digits is 1404928, while the sum is 53.

The square root of 80877788 is about 8993.2078815070. The cubic root of 80877788 is about 432.4571563695.

The spelling of 80877788 in words is "eighty million, eight hundred seventy-seven thousand, seven hundred eighty-eight".