669078528 has 88 divisors (see below), whose sum is σ = 1791010368. Its totient is φ = 222068736.

The previous prime is 669078499. The next prime is 669078587. The reversal of 669078528 is 825870966.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1329925 + ... + 1330427.

Almost surely, 2^669078528 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 669078528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (895505184).

669078528 is an abundant number, since it is smaller than the sum of its proper divisors (1121931840).

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

669078528 is a wasteful number, since it uses less digits than its factorization.

669078528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959 (or 941 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 51.

The square root of 669078528 is about 25866.5523021527. The cubic root of 669078528 is about 874.6326743350.

The spelling of 669078528 in words is "six hundred sixty-nine million, seventy-eight thousand, five hundred twenty-eight".