421654662 has 72 divisors (see below), whose sum is σ = 1079285688. Its totient is φ = 117936000.

The previous prime is 421654657. The next prime is 421654687. The reversal of 421654662 is 266456124.

421654662 is a `hidden beast` number, since 42 + 16 + 546 + 62 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 27162 + ... + 39762.

It is an arithmetic number, because the mean of its divisors is an integer number (14990079).

Almost surely, 2^421654662 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421654662, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (539642844).

421654662 is an abundant number, since it is smaller than the sum of its proper divisors (657631026).

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

421654662 is a wasteful number, since it uses less digits than its factorization.

421654662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12646 (or 12630 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 421654662 is about 20534.2314684529. The cubic root of 421654662 is about 749.8694065951.

The spelling of 421654662 in words is "four hundred twenty-one million, six hundred fifty-four thousand, six hundred sixty-two".