74977481 has 2 divisors, whose sum is σ = 74977482. Its totient is φ = 74977480.

The previous prime is 74977433. The next prime is 74977537. The reversal of 74977481 is 18477947.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59923081 + 15054400 = 7741^2 + 3880^2 .

It is a cyclic number.

It is not a de Polignac number, because 74977481 - 2¹⁰ = 74976457 is a prime.

It is a super-2 number, since 2×74977481² = 11243245314210722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74977081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37488740 + 37488741.

It is an arithmetic number, because the mean of its divisors is an integer number (37488741).

Almost surely, 2^74977481 is an apocalyptic number.

It is an amenable number.

74977481 is a deficient number, since it is larger than the sum of its proper divisors (1).

74977481 is an equidigital number, since it uses as much as digits as its factorization.

74977481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 395136, while the sum is 47.

The square root of 74977481 is about 8658.9538051661. The cubic root of 74977481 is about 421.6741211810.

The spelling of 74977481 in words is "seventy-four million, nine hundred seventy-seven thousand, four hundred eighty-one".