74531797 has 2 divisors, whose sum is σ = 74531798. Its totient is φ = 74531796.

The previous prime is 74531777. The next prime is 74531861. The reversal of 74531797 is 79713547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74494161 + 37636 = 8631^2 + 194^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74531797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74531747) 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, 37265898 + 37265899.

It is an arithmetic number, because the mean of its divisors is an integer number (37265899).

Almost surely, 2^74531797 is an apocalyptic number.

It is an amenable number.

74531797 is a deficient number, since it is larger than the sum of its proper divisors (1).

74531797 is an equidigital number, since it uses as much as digits as its factorization.

74531797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 185220, while the sum is 43.

The square root of 74531797 is about 8633.1800050734. The cubic root of 74531797 is about 420.8369497407.

The spelling of 74531797 in words is "seventy-four million, five hundred thirty-one thousand, seven hundred ninety-seven".