74909693 has 2 divisors, whose sum is σ = 74909694. Its totient is φ = 74909692.

The previous prime is 74909683. The next prime is 74909699. The reversal of 74909693 is 39690947.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52461049 + 22448644 = 7243^2 + 4738^2 .

It is a cyclic number.

It is not a de Polignac number, because 74909693 - 2⁶ = 74909629 is a prime.

It is a super-2 number, since 2×74909693² = 11222924210708498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74909699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37454846 + 37454847.

It is an arithmetic number, because the mean of its divisors is an integer number (37454847).

Almost surely, 2^74909693 is an apocalyptic number.

It is an amenable number.

74909693 is a deficient number, since it is larger than the sum of its proper divisors (1).

74909693 is an equidigital number, since it uses as much as digits as its factorization.

74909693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 367416, while the sum is 47.

The square root of 74909693 is about 8655.0385903241. The cubic root of 74909693 is about 421.5470027281.

The spelling of 74909693 in words is "seventy-four million, nine hundred nine thousand, six hundred ninety-three".