80671690 has 32 divisors (see below), whose sum is σ = 159014016. Its totient is φ = 29223360.

The previous prime is 80671667. The next prime is 80671709. The reversal of 80671690 is 9617608.

It is a super-2 number, since 2×80671690² = 13015843134912200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30979 + ... + 33481.

It is an arithmetic number, because the mean of its divisors is an integer number (4969188).

Almost surely, 2^80671690 is an apocalyptic number.

80671690 is a deficient number, since it is larger than the sum of its proper divisors (78342326).

80671690 is a wasteful number, since it uses less digits than its factorization.

80671690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2814.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 80671690 is about 8981.7420359304. The cubic root of 80671690 is about 432.0895054883.

The spelling of 80671690 in words is "eighty million, six hundred seventy-one thousand, six hundred ninety".