74075661 has 32 divisors (see below), whose sum is σ = 126028800. Its totient is φ = 42528240.

The previous prime is 74075641. The next prime is 74075707. The reversal of 74075661 is 16657047.

It is not a de Polignac number, because 74075661 - 2⁵ = 74075629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74075641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 921 + ... + 12206.

It is an arithmetic number, because the mean of its divisors is an integer number (3938400).

Almost surely, 2^74075661 is an apocalyptic number.

It is an amenable number.

74075661 is a deficient number, since it is larger than the sum of its proper divisors (51953139).

74075661 is a wasteful number, since it uses less digits than its factorization.

74075661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13166 (or 13160 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 74075661 is about 8606.7218498102. The cubic root of 74075661 is about 419.9766823789.

The spelling of 74075661 in words is "seventy-four million, seventy-five thousand, six hundred sixty-one".