662726436 has 48 divisors (see below), whose sum is σ = 1642140864. Its totient is φ = 207302656.

The previous prime is 662726429. The next prime is 662726437. The reversal of 662726436 is 634627266.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (662726437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67411 + ... + 76613.

It is an arithmetic number, because the mean of its divisors is an integer number (34211268).

Almost surely, 2^662726436 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 662726436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (821070432).

662726436 is an abundant number, since it is smaller than the sum of its proper divisors (979414428).

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

662726436 is a wasteful number, since it uses less digits than its factorization.

662726436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9580 (or 9578 counting only the distinct ones).

The product of its digits is 435456, while the sum is 42.

The square root of 662726436 is about 25743.4736583857. The cubic root of 662726436 is about 871.8560086150.

The spelling of 662726436 in words is "six hundred sixty-two million, seven hundred twenty-six thousand, four hundred thirty-six".