662916408 has 96 divisors (see below), whose sum is σ = 2081950080. Its totient is φ = 172180800.

The previous prime is 662916391. The next prime is 662916409. The reversal of 662916408 is 804619266.

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 662916408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662916409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4023 + ... + 36633.

It is an arithmetic number, because the mean of its divisors is an integer number (21686980).

Almost surely, 2^662916408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 662916408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1040975040).

662916408 is an abundant number, since it is smaller than the sum of its proper divisors (1419033672).

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

662916408 is a wasteful number, since it uses less digits than its factorization.

662916408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32649 (or 32634 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 662916408 is about 25747.1631058647. The cubic root of 662916408 is about 871.9393071412.

The spelling of 662916408 in words is "six hundred sixty-two million, nine hundred sixteen thousand, four hundred eight".