74622131 has 2 divisors, whose sum is σ = 74622132. Its totient is φ = 74622130.

The previous prime is 74622109. The next prime is 74622167. The reversal of 74622131 is 13122647.

It is a weak prime.

It is an emirp because it is prime and its reverse (13122647) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74622131 - 2²⁶ = 7513267 is a prime.

It is a super-2 number, since 2×74622131² = 11136924869962322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 74622131.

It is not a weakly prime, because it can be changed into another prime (74622631) 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, 37311065 + 37311066.

It is an arithmetic number, because the mean of its divisors is an integer number (37311066).

Almost surely, 2^74622131 is an apocalyptic number.

74622131 is a deficient number, since it is larger than the sum of its proper divisors (1).

74622131 is an equidigital number, since it uses as much as digits as its factorization.

74622131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 26.

The square root of 74622131 is about 8638.4102125333. The cubic root of 74622131 is about 421.0069019768.

Adding to 74622131 its reverse (13122647), we get a palindrome (87744778).

The spelling of 74622131 in words is "seventy-four million, six hundred twenty-two thousand, one hundred thirty-one".