74774969 has 4 divisors (see below), whose sum is σ = 74882340. Its totient is φ = 74667600.

The previous prime is 74774957. The next prime is 74774989. The reversal of 74774969 is 96947747.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34070569 + 40704400 = 5837^2 + 6380^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74774969 is a prime.

It is a super-2 number, since 2×74774969² = 11182591977901922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74774969.

It is not an unprimeable number, because it can be changed into a prime (74774929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52634 + ... + 54035.

It is an arithmetic number, because the mean of its divisors is an integer number (18720585).

Almost surely, 2^74774969 is an apocalyptic number.

It is an amenable number.

74774969 is a deficient number, since it is larger than the sum of its proper divisors (107371).

74774969 is a wasteful number, since it uses less digits than its factorization.

74774969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107370.

The product of its digits is 2667168, while the sum is 53.

The square root of 74774969 is about 8647.2521068834. The cubic root of 74774969 is about 421.2941356780.

The spelling of 74774969 in words is "seventy-four million, seven hundred seventy-four thousand, nine hundred sixty-nine".