74866513 has 2 divisors, whose sum is σ = 74866514. Its totient is φ = 74866512.

The previous prime is 74866507. The next prime is 74866579. The reversal of 74866513 is 31566847.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74857104 + 9409 = 8652^2 + 97^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74866513 is a prime.

It is not a weakly prime, because it can be changed into another prime (74866013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37433256 + 37433257.

It is an arithmetic number, because the mean of its divisors is an integer number (37433257).

Almost surely, 2^74866513 is an apocalyptic number.

It is an amenable number.

74866513 is a deficient number, since it is larger than the sum of its proper divisors (1).

74866513 is an equidigital number, since it uses as much as digits as its factorization.

74866513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 40.

The square root of 74866513 is about 8652.5437300253. The cubic root of 74866513 is about 421.4659900784.

The spelling of 74866513 in words is "seventy-four million, eight hundred sixty-six thousand, five hundred thirteen".