74299665 has 16 divisors (see below), whose sum is σ = 129686976. Its totient is φ = 36024000.

The previous prime is 74299661. The next prime is 74299681. The reversal of 74299665 is 56699247.

It is not a de Polignac number, because 74299665 - 2² = 74299661 is a prime.

It is a super-2 number, since 2×74299665² = 11040880438224450, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74299661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224986 + ... + 225315.

It is an arithmetic number, because the mean of its divisors is an integer number (8105436).

Almost surely, 2^74299665 is an apocalyptic number.

It is an amenable number.

74299665 is a deficient number, since it is larger than the sum of its proper divisors (55387311).

74299665 is a wasteful number, since it uses less digits than its factorization.

74299665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450320.

The product of its digits is 816480, while the sum is 48.

The square root of 74299665 is about 8619.7253436522. The cubic root of 74299665 is about 420.3995913603.

The spelling of 74299665 in words is "seventy-four million, two hundred ninety-nine thousand, six hundred sixty-five".