80629813 has 16 divisors (see below), whose sum is σ = 89971200. Its totient is φ = 71639280.

The previous prime is 80629763. The next prime is 80629837. The reversal of 80629813 is 31892608.

It is a cyclic number.

It is not a de Polignac number, because 80629813 - 2¹⁷ = 80498741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80629013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183448 + ... + 183886.

It is an arithmetic number, because the mean of its divisors is an integer number (5623200).

Almost surely, 2^80629813 is an apocalyptic number.

It is an amenable number.

80629813 is a deficient number, since it is larger than the sum of its proper divisors (9341387).

80629813 is a wasteful number, since it uses less digits than its factorization.

80629813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 80629813 is about 8979.4105040364. The cubic root of 80629813 is about 432.0147260784.

The spelling of 80629813 in words is "eighty million, six hundred twenty-nine thousand, eight hundred thirteen".