74744745 has 16 divisors (see below), whose sum is σ = 123716160. Its totient is φ = 38489024.

The previous prime is 74744729. The next prime is 74744749. The reversal of 74744745 is 54744747.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 74744745 - 2⁴ = 74744729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74744697 and 74744706.

It is not an unprimeable number, because it can be changed into a prime (74744749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85479 + ... + 86348.

It is an arithmetic number, because the mean of its divisors is an integer number (7732260).

Almost surely, 2^74744745 is an apocalyptic number.

It is an amenable number.

74744745 is a deficient number, since it is larger than the sum of its proper divisors (48971415).

74744745 is a wasteful number, since it uses less digits than its factorization.

74744745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171864.

The product of its digits is 439040, while the sum is 42.

The square root of 74744745 is about 8645.5043230572. The cubic root of 74744745 is about 421.2373657450.

The spelling of 74744745 in words is "seventy-four million, seven hundred forty-four thousand, seven hundred forty-five".