76972487 has 2 divisors, whose sum is σ = 76972488. Its totient is φ = 76972486.

The previous prime is 76972459. The next prime is 76972531. The reversal of 76972487 is 78427967.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76972487 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76972187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38486243 + 38486244.

It is an arithmetic number, because the mean of its divisors is an integer number (38486244).

Almost surely, 2^76972487 is an apocalyptic number.

76972487 is a deficient number, since it is larger than the sum of its proper divisors (1).

76972487 is an equidigital number, since it uses as much as digits as its factorization.

76972487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1185408, while the sum is 50.

The square root of 76972487 is about 8773.3965486578. The cubic root of 76972487 is about 425.3814098562.

The spelling of 76972487 in words is "seventy-six million, nine hundred seventy-two thousand, four hundred eighty-seven".