80718653 has 4 divisors (see below), whose sum is σ = 80962848. Its totient is φ = 80474460.

The previous prime is 80718613. The next prime is 80718689. The reversal of 80718653 is 35681708.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80718653 - 2²⁶ = 13609789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80718613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121601 + ... + 122262.

It is an arithmetic number, because the mean of its divisors is an integer number (20240712).

Almost surely, 2^80718653 is an apocalyptic number.

It is an amenable number.

80718653 is a deficient number, since it is larger than the sum of its proper divisors (244195).

80718653 is a wasteful number, since it uses less digits than its factorization.

80718653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244194.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 80718653 is about 8984.3560147625. The cubic root of 80718653 is about 432.1733361481.

The spelling of 80718653 in words is "eighty million, seven hundred eighteen thousand, six hundred fifty-three".