74746645 has 8 divisors (see below), whose sum is σ = 89813304. Its totient is φ = 59719104.

The previous prime is 74746643. The next prime is 74746657. The reversal of 74746645 is 54664747.

It can be written as a sum of positive squares in 4 ways, for example, as 9492561 + 65254084 = 3081^2 + 8078^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74746645 - 2¹ = 74746643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74746643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5394 + ... + 13363.

It is an arithmetic number, because the mean of its divisors is an integer number (11226663).

Almost surely, 2^74746645 is an apocalyptic number.

It is an amenable number.

74746645 is a deficient number, since it is larger than the sum of its proper divisors (15066659).

74746645 is a wasteful number, since it uses less digits than its factorization.

74746645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19559.

The product of its digits is 564480, while the sum is 43.

The square root of 74746645 is about 8645.6142060585. The cubic root of 74746645 is about 421.2409349780.

The spelling of 74746645 in words is "seventy-four million, seven hundred forty-six thousand, six hundred forty-five".