74400681 has 8 divisors (see below), whose sum is σ = 99249120. Its totient is φ = 49576352.

The previous prime is 74400679. The next prime is 74400719. The reversal of 74400681 is 18600447.

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

It is a cyclic number.

It is not a de Polignac number, because 74400681 - 2¹ = 74400679 is a prime.

It is a super-2 number, since 2×74400681² = 11070922666527522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74400481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3190 + ... + 12608.

It is an arithmetic number, because the mean of its divisors is an integer number (12406140).

Almost surely, 2^74400681 is an apocalyptic number.

It is an amenable number.

74400681 is a deficient number, since it is larger than the sum of its proper divisors (24848439).

74400681 is a wasteful number, since it uses less digits than its factorization.

74400681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12055.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 74400681 is about 8625.5829368223. The cubic root of 74400681 is about 420.5900267363.

The spelling of 74400681 in words is "seventy-four million, four hundred thousand, six hundred eighty-one".