76972297 has 2 divisors, whose sum is σ = 76972298. Its totient is φ = 76972296.

The previous prime is 76972289. The next prime is 76972303. The reversal of 76972297 is 79227967.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76370121 + 602176 = 8739^2 + 776^2 .

It is a cyclic number.

It is not a de Polignac number, because 76972297 - 2³ = 76972289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76972297.

It is not a weakly prime, because it can be changed into another prime (76972897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38486148 + 38486149.

It is an arithmetic number, because the mean of its divisors is an integer number (38486149).

Almost surely, 2^76972297 is an apocalyptic number.

It is an amenable number.

76972297 is a deficient number, since it is larger than the sum of its proper divisors (1).

76972297 is an equidigital number, since it uses as much as digits as its factorization.

76972297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 666792, while the sum is 49.

The square root of 76972297 is about 8773.3857204616. The cubic root of 76972297 is about 425.3810598500.

The spelling of 76972297 in words is "seventy-six million, nine hundred seventy-two thousand, two hundred ninety-seven".