74663779 has 8 divisors (see below), whose sum is σ = 81606528. Its totient is φ = 68004480.

The previous prime is 74663741. The next prime is 74663807. The reversal of 74663779 is 97736647.

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 74663779 - 2¹¹ = 74661731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74663879) 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, 70312 + ... + 71365.

It is an arithmetic number, because the mean of its divisors is an integer number (10200816).

Almost surely, 2^74663779 is an apocalyptic number.

74663779 is a deficient number, since it is larger than the sum of its proper divisors (6942749).

74663779 is a wasteful number, since it uses less digits than its factorization.

74663779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141725.

The product of its digits is 1333584, while the sum is 49.

The square root of 74663779 is about 8640.8205050215. The cubic root of 74663779 is about 421.0852113389.

The spelling of 74663779 in words is "seventy-four million, six hundred sixty-three thousand, seven hundred seventy-nine".