74245665 has 32 divisors (see below), whose sum is σ = 130669056. Its totient is φ = 35769600.

The previous prime is 74245621. The next prime is 74245667. The reversal of 74245665 is 56654247.

It is not a de Polignac number, because 74245665 - 2⁷ = 74245537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (74245667) 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, 5115 + ... + 13215.

It is an arithmetic number, because the mean of its divisors is an integer number (4083408).

Almost surely, 2^74245665 is an apocalyptic number.

It is an amenable number.

74245665 is a deficient number, since it is larger than the sum of its proper divisors (56423391).

74245665 is a wasteful number, since it uses less digits than its factorization.

74245665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8169.

The product of its digits is 201600, while the sum is 39.

The square root of 74245665 is about 8616.5924239226. The cubic root of 74245665 is about 420.2977197485.

The spelling of 74245665 in words is "seventy-four million, two hundred forty-five thousand, six hundred sixty-five".