662506164 has 72 divisors (see below), whose sum is σ = 1726026120. Its totient is φ = 214106112.

The previous prime is 662506157. The next prime is 662506199. The reversal of 662506164 is 461605266.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 36505764 + 626000400 = 6042^2 + 25020^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 469492 + ... + 470900.

It is an arithmetic number, because the mean of its divisors is an integer number (23972585).

Almost surely, 2^662506164 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 662506164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (863013060).

662506164 is an abundant number, since it is smaller than the sum of its proper divisors (1063519956).

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

662506164 is a wasteful number, since it uses less digits than its factorization.

662506164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809 (or 1804 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 662506164 is about 25739.1950923101. The cubic root of 662506164 is about 871.7594042762.

The spelling of 662506164 in words is "six hundred sixty-two million, five hundred six thousand, one hundred sixty-four".