80997906 has 16 divisors (see below), whose sum is σ = 176722848. Its totient is φ = 24544800.

The previous prime is 80997887. The next prime is 80997923. The reversal of 80997906 is 60979908.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 613555 + ... + 613686.

It is an arithmetic number, because the mean of its divisors is an integer number (11045178).

Almost surely, 2^80997906 is an apocalyptic number.

80997906 is an abundant number, since it is smaller than the sum of its proper divisors (95724942).

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

80997906 is a wasteful number, since it uses less digits than its factorization.

80997906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227257.

The product of its (nonzero) digits is 244944, while the sum is 48.

The square root of 80997906 is about 8999.8836659148. The cubic root of 80997906 is about 432.6711425779.

The spelling of 80997906 in words is "eighty million, nine hundred ninety-seven thousand, nine hundred six".