669922036 has 24 divisors (see below), whose sum is σ = 1340418240. Its totient is φ = 286986432.

The previous prime is 669922031. The next prime is 669922051. The reversal of 669922036 is 630229966.

It is a junction number, because it is equal to n+sod(n) for n = 669921983 and 669922001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669922031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97275 + ... + 103933.

It is an arithmetic number, because the mean of its divisors is an integer number (55850760).

Almost surely, 2^669922036 is an apocalyptic number.

It is an amenable number.

669922036 is an abundant number, since it is smaller than the sum of its proper divisors (670496204).

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

669922036 is a wasteful number, since it uses less digits than its factorization.

669922036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10263 (or 10261 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 43.

The square root of 669922036 is about 25882.8521612283. The cubic root of 669922036 is about 875.0000700952. Note that the first 4 decimals are identical.

The spelling of 669922036 in words is "six hundred sixty-nine million, nine hundred twenty-two thousand, thirty-six".