74845769 has 6 divisors (see below), whose sum is σ = 78992730. Its totient is φ = 70906176.

The previous prime is 74845763. The next prime is 74845777. The reversal of 74845769 is 96754847.

It can be written as a sum of positive squares in only one way, i.e., 73753744 + 1092025 = 8588^2 + 1045^2 .

It is a de Polignac number, because none of the positive numbers 2^k-74845769 is a prime.

It is a super-2 number, since 2×74845769² = 11203778274402722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74845763) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 103304 + ... + 104025.

It is an arithmetic number, because the mean of its divisors is an integer number (13165455).

Almost surely, 2^74845769 is an apocalyptic number.

It is an amenable number.

74845769 is a deficient number, since it is larger than the sum of its proper divisors (4146961).

74845769 is a wasteful number, since it uses less digits than its factorization.

74845769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207367 (or 207348 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 50.

The square root of 74845769 is about 8651.3449243456. The cubic root of 74845769 is about 421.4270599089.

The spelling of 74845769 in words is "seventy-four million, eight hundred forty-five thousand, seven hundred sixty-nine".