74512881 has 6 divisors (see below), whose sum is σ = 107629730. Its totient is φ = 49675248.

The previous prime is 74512877. The next prime is 74512883. The reversal of 74512881 is 18821547.

It can be written as a sum of positive squares in only one way, i.e., 66977856 + 7535025 = 8184^2 + 2745^2 .

It is not a de Polignac number, because 74512881 - 2² = 74512877 is a prime.

It is a super-2 number, since 2×74512881² = 11104338869840322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74512883) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4139596 + ... + 4139613.

Almost surely, 2^74512881 is an apocalyptic number.

It is an amenable number.

74512881 is a deficient number, since it is larger than the sum of its proper divisors (33116849).

74512881 is a wasteful number, since it uses less digits than its factorization.

74512881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8279215 (or 8279212 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 74512881 is about 8632.0843948608. The cubic root of 74512881 is about 420.8013442425.

The spelling of 74512881 in words is "seventy-four million, five hundred twelve thousand, eight hundred eighty-one".