74820774 has 64 divisors (see below), whose sum is σ = 185366016. Its totient is φ = 19643904.

The previous prime is 74820751. The next prime is 74820793. The reversal of 74820774 is 47702847.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29484 + ... + 31920.

It is an arithmetic number, because the mean of its divisors is an integer number (2896344).

Almost surely, 2^74820774 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74820774, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92683008).

74820774 is an abundant number, since it is smaller than the sum of its proper divisors (110545242).

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

74820774 is a wasteful number, since it uses less digits than its factorization.

74820774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2509.

The product of its (nonzero) digits is 87808, while the sum is 39.

The square root of 74820774 is about 8649.9002306385. The cubic root of 74820774 is about 421.3801423508.

The spelling of 74820774 in words is "seventy-four million, eight hundred twenty thousand, seven hundred seventy-four".