74672657 has 2 divisors, whose sum is σ = 74672658. Its totient is φ = 74672656.

The previous prime is 74672629. The next prime is 74672683. The reversal of 74672657 is 75627647.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74666881 + 5776 = 8641^2 + 76^2 .

It is a cyclic number.

It is not a de Polignac number, because 74672657 - 2¹⁴ = 74656273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74642657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37336328 + 37336329.

It is an arithmetic number, because the mean of its divisors is an integer number (37336329).

Almost surely, 2^74672657 is an apocalyptic number.

It is an amenable number.

74672657 is a deficient number, since it is larger than the sum of its proper divisors (1).

74672657 is an equidigital number, since it uses as much as digits as its factorization.

74672657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 493920, while the sum is 44.

The square root of 74672657 is about 8641.3342141130. The cubic root of 74672657 is about 421.1019005841.

The spelling of 74672657 in words is "seventy-four million, six hundred seventy-two thousand, six hundred fifty-seven".