74579969 has 8 divisors (see below), whose sum is σ = 79098408. Its totient is φ = 70076160.

The previous prime is 74579951. The next prime is 74579971. The reversal of 74579969 is 96997547.

It can be written as a sum of positive squares in 4 ways, for example, as 9535744 + 65044225 = 3088^2 + 8065^2 .

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 74579969 - 2²⁴ = 57802753 is a prime.

It is a super-2 number, since 2×74579969² = 11124343552081922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74579269) 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, 7919 + ... + 14555.

It is an arithmetic number, because the mean of its divisors is an integer number (9887301).

It is a Proth number, since it is equal to 569 ⋅ 2¹⁷ + 1 and 569 < 2¹⁷.

Almost surely, 2^74579969 is an apocalyptic number.

It is an amenable number.

74579969 is a deficient number, since it is larger than the sum of its proper divisors (4518439).

74579969 is a wasteful number, since it uses less digits than its factorization.

74579969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7315.

The product of its digits is 4286520, while the sum is 56.

The square root of 74579969 is about 8635.9694881351. The cubic root of 74579969 is about 420.9275964730.

The spelling of 74579969 in words is "seventy-four million, five hundred seventy-nine thousand, nine hundred sixty-nine".