74272837 has 2 divisors, whose sum is σ = 74272838. Its totient is φ = 74272836.

The previous prime is 74272829. The next prime is 74272859. The reversal of 74272837 is 73827247.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52983841 + 21288996 = 7279^2 + 4614^2 .

It is a cyclic number.

It is not a de Polignac number, because 74272837 - 2³ = 74272829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74272837.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74272867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37136418 + 37136419.

It is an arithmetic number, because the mean of its divisors is an integer number (37136419).

Almost surely, 2^74272837 is an apocalyptic number.

It is an amenable number.

74272837 is a deficient number, since it is larger than the sum of its proper divisors (1).

74272837 is an equidigital number, since it uses as much as digits as its factorization.

74272837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131712, while the sum is 40.

The square root of 74272837 is about 8618.1690050729. The cubic root of 74272837 is about 420.3489862063.

The spelling of 74272837 in words is "seventy-four million, two hundred seventy-two thousand, eight hundred thirty-seven".