669270 has 32 divisors (see below), whose sum is σ = 1836288. Its totient is φ = 152928.

The previous prime is 669247. The next prime is 669271. The reversal of 669270 is 72966.

669270 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669271) by changing a digit.

669270 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1384 + ... + 1803.

It is an arithmetic number, because the mean of its divisors is an integer number (57384).

2⁶⁶⁹²⁷⁰ is an apocalyptic number.

669270 is an abundant number, since it is smaller than the sum of its proper divisors (1167018).

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

669270 is a wasteful number, since it uses less digits than its factorization.

669270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3204.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 669270 is about 818.0892371863. The cubic root of 669270 is about 87.4716098372.

It can be divided in two parts, 669 and 270, that added together give a palindrome (939).

The spelling of 669270 in words is "six hundred sixty-nine thousand, two hundred seventy".