80870685 has 32 divisors (see below), whose sum is σ = 148303872. Its totient is φ = 36863040.

The previous prime is 80870681. The next prime is 80870693. The reversal of 80870685 is 58607808.

It is a happy number.

It is not a de Polignac number, because 80870685 - 2² = 80870681 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80870681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44362 + ... + 46148.

It is an arithmetic number, because the mean of its divisors is an integer number (4634496).

Almost surely, 2^80870685 is an apocalyptic number.

It is an amenable number.

80870685 is a deficient number, since it is larger than the sum of its proper divisors (67433187).

80870685 is a wasteful number, since it uses less digits than its factorization.

80870685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2233.

The product of its (nonzero) digits is 107520, while the sum is 42.

The square root of 80870685 is about 8992.8129636950. The cubic root of 80870685 is about 432.4444959791. Note that the first 4 decimals are identical.

The spelling of 80870685 in words is "eighty million, eight hundred seventy thousand, six hundred eighty-five".