669862050 has 288 divisors, whose sum is σ = 2094615936. Its totient is φ = 140236800.

The previous prime is 669862013. The next prime is 669862057. The reversal of 669862050 is 50268966.

669862050 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 669861993 and 669862011.

It is not an unprimeable number, because it can be changed into a prime (669862057) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 4011067 + ... + 4011233.

It is an arithmetic number, because the mean of its divisors is an integer number (7272972).

Almost surely, 2^669862050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 669862050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1047307968).

669862050 is an abundant number, since it is smaller than the sum of its proper divisors (1424753886).

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

669862050 is a wasteful number, since it uses less digits than its factorization.

669862050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 669862050 is about 25881.6933371833. The cubic root of 669862050 is about 874.9739529661.

The spelling of 669862050 in words is "six hundred sixty-nine million, eight hundred sixty-two thousand, fifty".