74302681 has 2 divisors, whose sum is σ = 74302682. Its totient is φ = 74302680.

The previous prime is 74302663. The next prime is 74302717. The reversal of 74302681 is 18620347.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62157456 + 12145225 = 7884^2 + 3485^2 .

It is an emirp because it is prime and its reverse (18620347) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74302681 - 2⁵ = 74302649 is a prime.

It is a super-2 number, since 2×74302681² = 11041776807575522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74302651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37151340 + 37151341.

It is an arithmetic number, because the mean of its divisors is an integer number (37151341).

Almost surely, 2^74302681 is an apocalyptic number.

It is an amenable number.

74302681 is a deficient number, since it is larger than the sum of its proper divisors (1).

74302681 is an equidigital number, since it uses as much as digits as its factorization.

74302681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 74302681 is about 8619.9002894465. The cubic root of 74302681 is about 420.4052796229.

The spelling of 74302681 in words is "seventy-four million, three hundred two thousand, six hundred eighty-one".