669153424 has 45 divisors (see below), whose sum is σ = 1348780953. Its totient is φ = 321590976.

The previous prime is 669153413. The next prime is 669153427. The reversal of 669153424 is 424351966.

The square root of 669153424 is 25868.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 350887824 + 318265600 = 18732^2 + 17840^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (669153427) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3000577 + ... + 3000799.

Almost surely, 2^669153424 is an apocalyptic number.

669153424 is the 25868-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 669153424

669153424 is an abundant number, since it is smaller than the sum of its proper divisors (679627529).

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

669153424 is an equidigital number, since it uses as much as digits as its factorization.

669153424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512 (or 254 counting only the distinct ones).

The product of its digits is 155520, while the sum is 40.

The cubic root of 669153424 is about 874.6653082945.

The spelling of 669153424 in words is "six hundred sixty-nine million, one hundred fifty-three thousand, four hundred twenty-four".