74904437 has 2 divisors, whose sum is σ = 74904438. Its totient is φ = 74904436.

The previous prime is 74904421. The next prime is 74904439. The reversal of 74904437 is 73440947.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61058596 + 13845841 = 7814^2 + 3721^2 .

It is a cyclic number.

It is not a de Polignac number, because 74904437 - 2⁴ = 74904421 is a prime.

It is a super-2 number, since 2×74904437² = 11221349364573938, which contains 22 as substring.

Together with 74904439, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74904437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74904439) 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, 37452218 + 37452219.

It is an arithmetic number, because the mean of its divisors is an integer number (37452219).

Almost surely, 2^74904437 is an apocalyptic number.

It is an amenable number.

74904437 is a deficient number, since it is larger than the sum of its proper divisors (1).

74904437 is an equidigital number, since it uses as much as digits as its factorization.

74904437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 74904437 is about 8654.7349468369. The cubic root of 74904437 is about 421.5371432881.

The spelling of 74904437 in words is "seventy-four million, nine hundred four thousand, four hundred thirty-seven".