74779936 has 144 divisors (see below), whose sum is σ = 193052160. Its totient is φ = 27878400.

The previous prime is 74779931. The next prime is 74779937. The reversal of 74779936 is 63997747.

74779936 = T₁₃₅₅ + T₁₃₅₆ + ... + T₁₄₃₁.

It is not an unprimeable number, because it can be changed into a prime (74779931) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 840180 + ... + 840268.

It is an arithmetic number, because the mean of its divisors is an integer number (1340640).

Almost surely, 2^74779936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74779936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96526080).

74779936 is an abundant number, since it is smaller than the sum of its proper divisors (118272224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74779936 is a wasteful number, since it uses less digits than its factorization.

74779936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 140 counting only the distinct ones).

The product of its digits is 2000376, while the sum is 52.

The square root of 74779936 is about 8647.5393031775. The cubic root of 74779936 is about 421.3034637623.

The spelling of 74779936 in words is "seventy-four million, seven hundred seventy-nine thousand, nine hundred thirty-six".