662471136 has 120 divisors (see below), whose sum is σ = 1956122784. Its totient is φ = 219939840.

The previous prime is 662471111. The next prime is 662471137. The reversal of 662471136 is 631174266.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 662471136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662471137) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1116856 + ... + 1117448.

Almost surely, 2^662471136 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 662471136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (978061392).

662471136 is an abundant number, since it is smaller than the sum of its proper divisors (1293651648).

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

662471136 is a wasteful number, since it uses less digits than its factorization.

662471136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046 (or 1029 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 662471136 is about 25738.5146424575. The cubic root of 662471136 is about 871.7440401290.

The spelling of 662471136 in words is "six hundred sixty-two million, four hundred seventy-one thousand, one hundred thirty-six".