74904481 has 2 divisors, whose sum is σ = 74904482. Its totient is φ = 74904480.

The previous prime is 74904457. The next prime is 74904509. The reversal of 74904481 is 18440947.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51051025 + 23853456 = 7145^2 + 4884^2 .

It is a cyclic number.

It is not a de Polignac number, because 74904481 - 2¹¹ = 74902433 is a prime.

It is a super-2 number, since 2×74904481² = 11221362547758722, which contains 22 as substring.

It is a Chen prime.

It is equal to p_4389067 and since 74904481 and 4389067 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74904481.

It is not a weakly prime, because it can be changed into another prime (74904421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37452240 + 37452241.

It is an arithmetic number, because the mean of its divisors is an integer number (37452241).

Almost surely, 2^74904481 is an apocalyptic number.

It is an amenable number.

74904481 is a deficient number, since it is larger than the sum of its proper divisors (1).

74904481 is an equidigital number, since it uses as much as digits as its factorization.

74904481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 74904481 is about 8654.7374887977. The cubic root of 74904481 is about 421.5372258272.

The spelling of 74904481 in words is "seventy-four million, nine hundred four thousand, four hundred eighty-one".