80620813 has 8 divisors (see below), whose sum is σ = 99225728. Its totient is φ = 63787824.

The previous prime is 80620811. The next prime is 80620849. The reversal of 80620813 is 31802608.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80620813 - 2¹ = 80620811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80620811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442881 + ... + 443062.

It is an arithmetic number, because the mean of its divisors is an integer number (12403216).

Almost surely, 2^80620813 is an apocalyptic number.

It is an amenable number.

80620813 is a deficient number, since it is larger than the sum of its proper divisors (18604915).

80620813 is a wasteful number, since it uses less digits than its factorization.

80620813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885963.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 80620813 is about 8978.9093435673. The cubic root of 80620813 is about 431.9986514733.

The spelling of 80620813 in words is "eighty million, six hundred twenty thousand, eight hundred thirteen".