80861075 has 12 divisors (see below), whose sum is σ = 100385688. Its totient is φ = 64612800.

The previous prime is 80861059. The next prime is 80861087. The reversal of 80861075 is 57016808.

It is a happy number.

It is not a de Polignac number, because 80861075 - 2⁴ = 80861059 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30815 + ... + 33335.

It is an arithmetic number, because the mean of its divisors is an integer number (8365474).

Almost surely, 2^80861075 is an apocalyptic number.

80861075 is a deficient number, since it is larger than the sum of its proper divisors (19524613).

80861075 is a wasteful number, since it uses less digits than its factorization.

80861075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3814 (or 3809 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 80861075 is about 8992.2786322489. The cubic root of 80861075 is about 432.4273659308.

The spelling of 80861075 in words is "eighty million, eight hundred sixty-one thousand, seventy-five".