74912069 has 4 divisors (see below), whose sum is σ = 74992620. Its totient is φ = 74831520.

The previous prime is 74912059. The next prime is 74912077. The reversal of 74912069 is 96021947.

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 50951044 + 23961025 = 7138^2 + 4895^2 .

It is a cyclic number.

It is not a de Polignac number, because 74912069 - 2⁴ = 74912053 is a prime.

It is a super-2 number, since 2×74912069² = 11223636163721522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74912059) 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, 38864 + ... + 40745.

It is an arithmetic number, because the mean of its divisors is an integer number (18748155).

Almost surely, 2^74912069 is an apocalyptic number.

It is an amenable number.

74912069 is a deficient number, since it is larger than the sum of its proper divisors (80551).

74912069 is an equidigital number, since it uses as much as digits as its factorization.

74912069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80550.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 74912069 is about 8655.1758503222. The cubic root of 74912069 is about 421.5514595839.

The spelling of 74912069 in words is "seventy-four million, nine hundred twelve thousand, sixty-nine".