74628791 has 2 divisors, whose sum is σ = 74628792. Its totient is φ = 74628790.

The previous prime is 74628787. The next prime is 74628797. The reversal of 74628791 is 19782647.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74628791 - 2² = 74628787 is a prime.

It is a super-2 number, since 2×74628791² = 11138912892243362, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74628797) 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, 37314395 + 37314396.

It is an arithmetic number, because the mean of its divisors is an integer number (37314396).

Almost surely, 2^74628791 is an apocalyptic number.

74628791 is a deficient number, since it is larger than the sum of its proper divisors (1).

74628791 is an equidigital number, since it uses as much as digits as its factorization.

74628791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 44.

The square root of 74628791 is about 8638.7956915302. The cubic root of 74628791 is about 421.0194265122.

The spelling of 74628791 in words is "seventy-four million, six hundred twenty-eight thousand, seven hundred ninety-one".