74612081 has 2 divisors, whose sum is σ = 74612082. Its totient is φ = 74612080.

The previous prime is 74612053. The next prime is 74612147. The reversal of 74612081 is 18021647.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70829056 + 3783025 = 8416^2 + 1945^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74612081 is a prime.

It is a super-2 number, since 2×74612081² = 11133925262301122, which contains 22 as substring.

It is equal to p_4372931 and since 74612081 and 4372931 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (74612051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37306040 + 37306041.

It is an arithmetic number, because the mean of its divisors is an integer number (37306041).

Almost surely, 2^74612081 is an apocalyptic number.

It is an amenable number.

74612081 is a deficient number, since it is larger than the sum of its proper divisors (1).

74612081 is an equidigital number, since it uses as much as digits as its factorization.

74612081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 74612081 is about 8637.8284886886. The cubic root of 74612081 is about 420.9880009294.

The spelling of 74612081 in words is "seventy-four million, six hundred twelve thousand, eighty-one".