74539679 has 8 divisors (see below), whose sum is σ = 83078640. Its totient is φ = 66462336.

The previous prime is 74539669. The next prime is 74539687. The reversal of 74539679 is 97693547.

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 74539679 - 2¹² = 74535583 is a prime.

It is a super-5 number, since 5×74539679⁵ (a number of 41 digits) contains 55555 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74539609) 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, 115064 + ... + 115709.

It is an arithmetic number, because the mean of its divisors is an integer number (10384830).

Almost surely, 2^74539679 is an apocalyptic number.

74539679 is a deficient number, since it is larger than the sum of its proper divisors (8538961).

74539679 is a wasteful number, since it uses less digits than its factorization.

74539679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230809.

The product of its digits is 1428840, while the sum is 50.

The square root of 74539679 is about 8633.6364875990. The cubic root of 74539679 is about 420.8517842143.

The spelling of 74539679 in words is "seventy-four million, five hundred thirty-nine thousand, six hundred seventy-nine".