669930 has 32 divisors (see below), whose sum is σ = 1629504. Its totient is φ = 176256.

The previous prime is 669923. The next prime is 669931. The reversal of 669930 is 39966.

669930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 669891 and 669900.

It is not an unprimeable number, because it can be changed into a prime (669931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4029 + ... + 4191.

It is an arithmetic number, because the mean of its divisors is an integer number (50922).

2⁶⁶⁹⁹³⁰ is an apocalyptic number.

669930 is an abundant number, since it is smaller than the sum of its proper divisors (959574).

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

669930 is a wasteful number, since it uses less digits than its factorization.

669930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310.

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 669930 is about 818.4925167648. The cubic root of 669930 is about 87.5003537401.

It can be divided in two parts, 669 and 930, that multiplied together give a triangular number (622170 = T₁₁₁₅).

The spelling of 669930 in words is "six hundred sixty-nine thousand, nine hundred thirty".