74696789 has 2 divisors, whose sum is σ = 74696790. Its totient is φ = 74696788.

The previous prime is 74696761. The next prime is 74696833. The reversal of 74696789 is 98769647.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74528689 + 168100 = 8633^2 + 410^2 .

It is a cyclic number.

It is not a de Polignac number, because 74696789 - 2²⁰ = 73648213 is a prime.

It is a super-2 number, since 2×74696789² = 11159220573821042, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74690789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37348394 + 37348395.

It is an arithmetic number, because the mean of its divisors is an integer number (37348395).

Almost surely, 2^74696789 is an apocalyptic number.

It is an amenable number.

74696789 is a deficient number, since it is larger than the sum of its proper divisors (1).

74696789 is an equidigital number, since it uses as much as digits as its factorization.

74696789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4572288, while the sum is 56.

The square root of 74696789 is about 8642.7304134747. The cubic root of 74696789 is about 421.1472582692.

The spelling of 74696789 in words is "seventy-four million, six hundred ninety-six thousand, seven hundred eighty-nine".