74768161 has 8 divisors (see below), whose sum is σ = 81109224. Its totient is φ = 68511360.

The previous prime is 74768149. The next prime is 74768167. The reversal of 74768161 is 16186747.

It can be written as a sum of positive squares in 4 ways, for example, as 463761 + 74304400 = 681^2 + 8620^2 .

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 74768161 - 2¹³ = 74759969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74768167) 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, 19210 + ... + 22771.

It is an arithmetic number, because the mean of its divisors is an integer number (10138653).

Almost surely, 2^74768161 is an apocalyptic number.

It is an amenable number.

74768161 is a deficient number, since it is larger than the sum of its proper divisors (6341063).

74768161 is a wasteful number, since it uses less digits than its factorization.

74768161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42131.

The product of its digits is 56448, while the sum is 40.

The square root of 74768161 is about 8646.8584468580. The cubic root of 74768161 is about 421.2813495029.

The spelling of 74768161 in words is "seventy-four million, seven hundred sixty-eight thousand, one hundred sixty-one".