74900513 has 2 divisors, whose sum is σ = 74900514. Its totient is φ = 74900512.

The previous prime is 74900491. The next prime is 74900519. The reversal of 74900513 is 31500947.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67782289 + 7118224 = 8233^2 + 2668^2 .

It is an emirp because it is prime and its reverse (31500947) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74900513 - 2¹² = 74896417 is a prime.

It is a super-2 number, since 2×74900513² = 11220173695326338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74900519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37450256 + 37450257.

It is an arithmetic number, because the mean of its divisors is an integer number (37450257).

Almost surely, 2^74900513 is an apocalyptic number.

It is an amenable number.

74900513 is a deficient number, since it is larger than the sum of its proper divisors (1).

74900513 is an equidigital number, since it uses as much as digits as its factorization.

74900513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 74900513 is about 8654.5082471507. The cubic root of 74900513 is about 421.5297821726.

The spelling of 74900513 in words is "seventy-four million, nine hundred thousand, five hundred thirteen".