669454 has 4 divisors (see below), whose sum is σ = 1004184. Its totient is φ = 334726.

The previous prime is 669451. The next prime is 669463. The reversal of 669454 is 454966.

669454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a d-powerful number, because it can be written as 6³ + 6⁵ + 4⁹ + 9⁵ + 5⁷ + 4⁹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167362 + ... + 167365.

It is an arithmetic number, because the mean of its divisors is an integer number (251046).

2⁶⁶⁹⁴⁵⁴ is an apocalyptic number.

669454 is a deficient number, since it is larger than the sum of its proper divisors (334730).

669454 is a wasteful number, since it uses less digits than its factorization.

669454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334729.

The product of its digits is 25920, while the sum is 34.

The square root of 669454 is about 818.2016866274. The cubic root of 669454 is about 87.4796251880.

The spelling of 669454 in words is "six hundred sixty-nine thousand, four hundred fifty-four".