80906810 has 32 divisors (see below), whose sum is σ = 151698960. Its totient is φ = 31030272.

The previous prime is 80906803. The next prime is 80906831. The reversal of 80906810 is 1860908.

It can be written as a sum of positive squares in 8 ways, for example, as 27573001 + 53333809 = 5251^2 + 7303^2 .

It is a super-2 number, since 2×80906810² = 13091823808752200, 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, 44642 + ... + 46418.

Almost surely, 2^80906810 is an apocalyptic number.

80906810 is a deficient number, since it is larger than the sum of its proper divisors (70792150).

80906810 is a wasteful number, since it uses less digits than its factorization.

80906810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1970.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 80906810 is about 8994.8212878300. The cubic root of 80906810 is about 432.5088774949.

The spelling of 80906810 in words is "eighty million, nine hundred six thousand, eight hundred ten".