80724907 has 2 divisors, whose sum is σ = 80724908. Its totient is φ = 80724906.

The previous prime is 80724881. The next prime is 80724923. The reversal of 80724907 is 70942708.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80724907 is a prime.

It is a super-2 number, since 2×80724907² = 13033021220317298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (80724967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40362453 + 40362454.

It is an arithmetic number, because the mean of its divisors is an integer number (40362454).

Almost surely, 2^80724907 is an apocalyptic number.

80724907 is a deficient number, since it is larger than the sum of its proper divisors (1).

80724907 is an equidigital number, since it uses as much as digits as its factorization.

80724907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 80724907 is about 8984.7040574523. The cubic root of 80724907 is about 432.1844973116.

The spelling of 80724907 in words is "eighty million, seven hundred twenty-four thousand, nine hundred seven".