662402988 has 96 divisors (see below), whose sum is σ = 1855257600. Its totient is φ = 203176512.

The previous prime is 662402981. The next prime is 662402989. The reversal of 662402988 is 889204266.

It is a super-2 number, since 2×662402988² = 877555437022656288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (662402981) 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, 649543 + ... + 650561.

It is an arithmetic number, because the mean of its divisors is an integer number (19325600).

Almost surely, 2^662402988 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 662402988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (927628800).

662402988 is an abundant number, since it is smaller than the sum of its proper divisors (1192854612).

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

662402988 is a wasteful number, since it uses less digits than its factorization.

662402988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508 (or 1500 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 662402988 is about 25737.1907557915. The cubic root of 662402988 is about 871.7141471788.

The spelling of 662402988 in words is "six hundred sixty-two million, four hundred two thousand, nine hundred eighty-eight".