74620690 has 32 divisors (see below), whose sum is σ = 137602800. Its totient is φ = 29126400.

The previous prime is 74620669. The next prime is 74620691. The reversal of 74620690 is 9602647.

It can be written as a sum of positive squares in 8 ways, for example, as 436921 + 74183769 = 661^2 + 8613^2 .

It is a super-2 number, since 2×74620690² = 11136494752152200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74620691) 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 in 15 ways as a sum of consecutive naturals, for example, 90480 + ... + 91300.

Almost surely, 2^74620690 is an apocalyptic number.

74620690 is a deficient number, since it is larger than the sum of its proper divisors (62982110).

74620690 is a wasteful number, since it uses less digits than its factorization.

74620690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 74620690 is about 8638.3268055799. The cubic root of 74620690 is about 421.0041919906.

The spelling of 74620690 in words is "seventy-four million, six hundred twenty thousand, six hundred ninety".