74790618 has 64 divisors (see below), whose sum is σ = 179988480. Its totient is φ = 20256192.

The previous prime is 74790607. The next prime is 74790647. The reversal of 74790618 is 81609747.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 74790618.

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, 133996 + ... + 134552.

It is an arithmetic number, because the mean of its divisors is an integer number (2812320).

Almost surely, 2^74790618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74790618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89994240).

74790618 is an abundant number, since it is smaller than the sum of its proper divisors (105197862).

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

74790618 is a wasteful number, since it uses less digits than its factorization.

74790618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 74790618 is about 8648.1569134701. The cubic root of 74790618 is about 421.3235232843.

The spelling of 74790618 in words is "seventy-four million, seven hundred ninety thousand, six hundred eighteen".