669597696 has 180 divisors, whose sum is σ = 2044660800. Its totient is φ = 210567168.

The previous prime is 669597647. The next prime is 669597743. The reversal of 669597696 is 696795966.

It is a super-2 number, since 2×669597696² = 896722148977016832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2801545 + ... + 2801783.

Almost surely, 2^669597696 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 669597696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1022330400).

669597696 is an abundant number, since it is smaller than the sum of its proper divisors (1375063104).

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

669597696 is a wasteful number, since it uses less digits than its factorization.

669597696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292 (or 263 counting only the distinct ones).

The product of its digits is 33067440, while the sum is 63.

The square root of 669597696 is about 25876.5858644451. The cubic root of 669597696 is about 874.8588380714.

The spelling of 669597696 in words is "six hundred sixty-nine million, five hundred ninety-seven thousand, six hundred ninety-six".