662695398 has 64 divisors (see below), whose sum is σ = 1506263040. Its totient is φ = 215913600.

The previous prime is 662695391. The next prime is 662695417. The reversal of 662695398 is 893596266.

662695398 is a `hidden beast` number, since 6 + 626 + 9 + 5 + 3 + 9 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662695391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 486238 + ... + 487598.

It is an arithmetic number, because the mean of its divisors is an integer number (23535360).

Almost surely, 2^662695398 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 662695398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (753131520).

662695398 is an abundant number, since it is smaller than the sum of its proper divisors (843567642).

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

662695398 is a wasteful number, since it uses less digits than its factorization.

662695398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570 (or 1564 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 54.

The square root of 662695398 is about 25742.8708189277. The cubic root of 662695398 is about 871.8423976247.

The spelling of 662695398 in words is "six hundred sixty-two million, six hundred ninety-five thousand, three hundred ninety-eight".