80972641 has 4 divisors (see below), whose sum is σ = 81022000. Its totient is φ = 80923284.

The previous prime is 80972629. The next prime is 80972677. The reversal of 80972641 is 14627908.

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 80972641 - 2¹⁹ = 80448353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80972641.

It is not an unprimeable number, because it can be changed into a prime (80972041) 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 3 ways as a sum of consecutive naturals, for example, 22131 + ... + 25528.

It is an arithmetic number, because the mean of its divisors is an integer number (20255500).

Almost surely, 2^80972641 is an apocalyptic number.

It is an amenable number.

80972641 is a deficient number, since it is larger than the sum of its proper divisors (49359).

80972641 is a wasteful number, since it uses less digits than its factorization.

80972641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49358.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 80972641 is about 8998.4799271877. The cubic root of 80972641 is about 432.6261514016.

The spelling of 80972641 in words is "eighty million, nine hundred seventy-two thousand, six hundred forty-one".