74385661 has 8 divisors (see below), whose sum is σ = 85076480. Its totient is φ = 63710928.

The previous prime is 74385629. The next prime is 74385671. The reversal of 74385661 is 16658347.

It is a happy number.

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 74385661 - 2⁵ = 74385629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74385601) 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, 8500 + ... + 14866.

It is an arithmetic number, because the mean of its divisors is an integer number (10634560).

Almost surely, 2^74385661 is an apocalyptic number.

It is an amenable number.

74385661 is a deficient number, since it is larger than the sum of its proper divisors (10690819).

74385661 is a wasteful number, since it uses less digits than its factorization.

74385661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8043.

The product of its digits is 120960, while the sum is 40.

The square root of 74385661 is about 8624.7122270833. The cubic root of 74385661 is about 420.5617219445.

The spelling of 74385661 in words is "seventy-four million, three hundred eighty-five thousand, six hundred sixty-one".