80730613 has 4 divisors (see below), whose sum is σ = 81530028. Its totient is φ = 79931200.

The previous prime is 80730593. The next prime is 80730619. The reversal of 80730613 is 31603708.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 76702564 + 4028049 = 8758^2 + 2007^2 .

It is a cyclic number.

It is not a de Polignac number, because 80730613 - 2⁵ = 80730581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80730619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 399556 + ... + 399757.

It is an arithmetic number, because the mean of its divisors is an integer number (20382507).

Almost surely, 2^80730613 is an apocalyptic number.

It is an amenable number.

80730613 is a deficient number, since it is larger than the sum of its proper divisors (799415).

80730613 is a wasteful number, since it uses less digits than its factorization.

80730613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799414.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 80730613 is about 8985.0215915155. The cubic root of 80730613 is about 432.1946799873.

The spelling of 80730613 in words is "eighty million, seven hundred thirty thousand, six hundred thirteen".