72370577 has 2 divisors, whose sum is σ = 72370578. Its totient is φ = 72370576.

The previous prime is 72370567. The next prime is 72370603. The reversal of 72370577 is 77507327.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69072721 + 3297856 = 8311^2 + 1816^2 .

It is a cyclic number.

It is not a de Polignac number, because 72370577 - 2¹⁸ = 72108433 is a prime.

It is equal to p_4249298 and since 72370577 and 4249298 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72370577.

It is not a weakly prime, because it can be changed into another prime (72370517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36185288 + 36185289.

It is an arithmetic number, because the mean of its divisors is an integer number (36185289).

Almost surely, 2^72370577 is an apocalyptic number.

It is an amenable number.

72370577 is a deficient number, since it is larger than the sum of its proper divisors (1).

72370577 is an equidigital number, since it uses as much as digits as its factorization.

72370577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72030, while the sum is 38.

The square root of 72370577 is about 8507.0898079190. The cubic root of 72370577 is about 416.7292762094.

The spelling of 72370577 in words is "seventy-two million, three hundred seventy thousand, five hundred seventy-seven".