874290809646 has 128 divisors (see below), whose sum is σ = 1989112320000. Its totient is φ = 284592642048.

The previous prime is 874290809629. The next prime is 874290809653. The reversal of 874290809646 is 646908092478.

874290809646 is a `hidden beast` number, since 8 + 7 + 429 + 0 + 80 + 96 + 46 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 146862606 + ... + 146868558.

It is an arithmetic number, because the mean of its divisors is an integer number (15539940000).

Almost surely, 2^874290809646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 874290809646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (994556160000).

874290809646 is an abundant number, since it is smaller than the sum of its proper divisors (1114821510354).

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

874290809646 is a wasteful number, since it uses less digits than its factorization.

874290809646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6415 (or 6409 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 63.

The spelling of 874290809646 in words is "eight hundred seventy-four billion, two hundred ninety million, eight hundred nine thousand, six hundred forty-six".