669621150 has 72 divisors (see below), whose sum is σ = 1962613224. Its totient is φ = 162331200.

The previous prime is 669621101. The next prime is 669621157. The reversal of 669621150 is 51126966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669621157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 62689 + ... + 72588.

It is an arithmetic number, because the mean of its divisors is an integer number (27258517).

Almost surely, 2^669621150 is an apocalyptic number.

669621150 is an abundant number, since it is smaller than the sum of its proper divisors (1292992074).

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

669621150 is a wasteful number, since it uses less digits than its factorization.

669621150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135306 (or 135298 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 669621150 is about 25877.0390500923. The cubic root of 669621150 is about 874.8690525130.

The spelling of 669621150 in words is "six hundred sixty-nine million, six hundred twenty-one thousand, one hundred fifty".