76972747 has 2 divisors, whose sum is σ = 76972748. Its totient is φ = 76972746.

The previous prime is 76972741. The next prime is 76972751. The reversal of 76972747 is 74727967.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 76972747 - 2³ = 76972739 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76972747.

It is not a weakly prime, because it can be changed into another prime (76972741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38486373 + 38486374.

It is an arithmetic number, because the mean of its divisors is an integer number (38486374).

Almost surely, 2^76972747 is an apocalyptic number.

76972747 is a deficient number, since it is larger than the sum of its proper divisors (1).

76972747 is an equidigital number, since it uses as much as digits as its factorization.

76972747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1037232, while the sum is 49.

The square root of 76972747 is about 8773.4113661677. The cubic root of 76972747 is about 425.3818888111.

The spelling of 76972747 in words is "seventy-six million, nine hundred seventy-two thousand, seven hundred forty-seven".