669601296 has 160 divisors (see below), whose sum is σ = 2365681920. Its totient is φ = 176587776.

The previous prime is 669601243. The next prime is 669601297. The reversal of 669601296 is 692106966.

It is not an unprimeable number, because it can be changed into a prime (669601297) 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, 30796 + ... + 47828.

It is an arithmetic number, because the mean of its divisors is an integer number (14785512).

Almost surely, 2^669601296 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 669601296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1182840960).

669601296 is an abundant number, since it is smaller than the sum of its proper divisors (1696080624).

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

669601296 is a wasteful number, since it uses less digits than its factorization.

669601296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17070 (or 17058 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 669601296 is about 25876.6554253056. The cubic root of 669601296 is about 874.8604059214.

The spelling of 669601296 in words is "six hundred sixty-nine million, six hundred one thousand, two hundred ninety-six".