80624261 has 4 divisors (see below), whose sum is σ = 80652000. Its totient is φ = 80596524.

The previous prime is 80624237. The next prime is 80624303. The reversal of 80624261 is 16242608.

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 a de Polignac number, because none of the positive numbers 2^k-80624261 is a prime.

It is a super-2 number, since 2×80624261² = 13000542923592242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80624461) 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, 8921 + ... + 15518.

It is an arithmetic number, because the mean of its divisors is an integer number (20163000).

Almost surely, 2^80624261 is an apocalyptic number.

It is an amenable number.

80624261 is a deficient number, since it is larger than the sum of its proper divisors (27739).

80624261 is a wasteful number, since it uses less digits than its factorization.

80624261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27738.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 80624261 is about 8979.1013470169. The cubic root of 80624261 is about 432.0048099745.

Adding to 80624261 its reverse (16242608), we get a palindrome (96866869).

The spelling of 80624261 in words is "eighty million, six hundred twenty-four thousand, two hundred sixty-one".