74744865 has 48 divisors (see below), whose sum is σ = 141680448. Its totient is φ = 36229248.

The previous prime is 74744843. The next prime is 74744939. The reversal of 74744865 is 56844747.

It is not a de Polignac number, because 74744865 - 2¹⁰ = 74743841 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 74744865.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38242 + ... + 40148.

It is an arithmetic number, because the mean of its divisors is an integer number (2951676).

Almost surely, 2^74744865 is an apocalyptic number.

It is an amenable number.

74744865 is a deficient number, since it is larger than the sum of its proper divisors (66935583).

74744865 is a wasteful number, since it uses less digits than its factorization.

74744865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998 (or 1995 counting only the distinct ones).

The product of its digits is 752640, while the sum is 45.

The square root of 74744865 is about 8645.5112630775. The cubic root of 74744865 is about 421.2375911721.

The spelling of 74744865 in words is "seventy-four million, seven hundred forty-four thousand, eight hundred sixty-five".