74618979 has 4 divisors (see below), whose sum is σ = 99491976. Its totient is φ = 49745984.

The previous prime is 74618959. The next prime is 74618981. The reversal of 74618979 is 97981647.

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

It is a cyclic number.

It is not a de Polignac number, because 74618979 - 2¹³ = 74610787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74618959) 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, 12436494 + ... + 12436499.

It is an arithmetic number, because the mean of its divisors is an integer number (24872994).

Almost surely, 2^74618979 is an apocalyptic number.

74618979 is a deficient number, since it is larger than the sum of its proper divisors (24872997).

74618979 is a wasteful number, since it uses less digits than its factorization.

74618979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24872996.

The product of its digits is 762048, while the sum is 51.

The square root of 74618979 is about 8638.2277696296. The cubic root of 74618979 is about 421.0009741892. Note that the first 3 decimals are identical.

The spelling of 74618979 in words is "seventy-four million, six hundred eighteen thousand, nine hundred seventy-nine".