890874774 has 160 divisors (see below), whose sum is σ = 2207969280. Its totient is φ = 267478848.

The previous prime is 890874763. The next prime is 890874839. The reversal of 890874774 is 477478098.

890874774 is a `hidden beast` number, since 8 + 90 + 87 + 477 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 890874774.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 7014699 + ... + 7014825.

It is an arithmetic number, because the mean of its divisors is an integer number (13799808).

Almost surely, 2^890874774 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 890874774, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1103984640).

890874774 is an abundant number, since it is smaller than the sum of its proper divisors (1317094506).

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

890874774 is a wasteful number, since it uses less digits than its factorization.

890874774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The square root of 890874774 is about 29847.5254250666. The cubic root of 890874774 is about 962.2152164496.

The spelling of 890874774 in words is "eight hundred ninety million, eight hundred seventy-four thousand, seven hundred seventy-four".