72926977 has 2 divisors, whose sum is σ = 72926978. Its totient is φ = 72926976.

The previous prime is 72926969. The next prime is 72926989. The reversal of 72926977 is 77962927.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36493681 + 36433296 = 6041^2 + 6036^2 .

It is a cyclic number.

It is not a de Polignac number, because 72926977 - 2³ = 72926969 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72926977.

It is not a weakly prime, because it can be changed into another prime (72926947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36463488 + 36463489.

It is an arithmetic number, because the mean of its divisors is an integer number (36463489).

Almost surely, 2^72926977 is an apocalyptic number.

It is an amenable number.

72926977 is a deficient number, since it is larger than the sum of its proper divisors (1).

72926977 is an equidigital number, since it uses as much as digits as its factorization.

72926977 is an evil number, because the sum of its binary digits is even.

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

The square root of 72926977 is about 8539.7293282633. The cubic root of 72926977 is about 417.7945179468.

The spelling of 72926977 in words is "seventy-two million, nine hundred twenty-six thousand, nine hundred seventy-seven".