74965679 has 4 divisors (see below), whose sum is σ = 75808080. Its totient is φ = 74123280.

The previous prime is 74965661. The next prime is 74965711. The reversal of 74965679 is 97656947.

74965679 = 75² + 76² + ... + 608².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97656947 = 503 ⋅194149.

It is a cyclic number.

It is not a de Polignac number, because 74965679 - 2¹⁶ = 74900143 is a prime.

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 74965679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74965879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 421067 + ... + 421244.

It is an arithmetic number, because the mean of its divisors is an integer number (18952020).

Almost surely, 2^74965679 is an apocalyptic number.

74965679 is a deficient number, since it is larger than the sum of its proper divisors (842401).

74965679 is an equidigital number, since it uses as much as digits as its factorization.

74965679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842400.

The product of its digits is 2857680, while the sum is 53.

The square root of 74965679 is about 8658.2722872407. The cubic root of 74965679 is about 421.6519951637.

The spelling of 74965679 in words is "seventy-four million, nine hundred sixty-five thousand, six hundred seventy-nine".