74040081 has 8 divisors (see below), whose sum is σ = 99038784. Its totient is φ = 49200720.

The previous prime is 74040077. The next prime is 74040097. The reversal of 74040081 is 18004047.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74040081 - 2² = 74040077 is a prime.

It is a super-2 number, since 2×74040081² = 10963867188973122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74040061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38746 + ... + 40611.

It is an arithmetic number, because the mean of its divisors is an integer number (12379848).

Almost surely, 2^74040081 is an apocalyptic number.

It is an amenable number.

74040081 is a deficient number, since it is larger than the sum of its proper divisors (24998703).

74040081 is a wasteful number, since it uses less digits than its factorization.

74040081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79671.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 74040081 is about 8604.6546124757. The cubic root of 74040081 is about 419.9094305843.

The spelling of 74040081 in words is "seventy-four million, forty thousand, eighty-one".