74506013 has 2 divisors, whose sum is σ = 74506014. Its totient is φ = 74506012.

The previous prime is 74506009. The next prime is 74506021. The reversal of 74506013 is 31060547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61811044 + 12694969 = 7862^2 + 3563^2 .

It is a cyclic number.

It is not a de Polignac number, because 74506013 - 2² = 74506009 is a prime.

It is a super-2 number, since 2×74506013² = 11102291946312338, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74506213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37253006 + 37253007.

It is an arithmetic number, because the mean of its divisors is an integer number (37253007).

Almost surely, 2^74506013 is an apocalyptic number.

It is an amenable number.

74506013 is a deficient number, since it is larger than the sum of its proper divisors (1).

74506013 is an equidigital number, since it uses as much as digits as its factorization.

74506013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 74506013 is about 8631.6865675255. The cubic root of 74506013 is about 420.7884151472.

The spelling of 74506013 in words is "seventy-four million, five hundred six thousand, thirteen".