669465 has 48 divisors (see below), whose sum is σ = 1310400. Its totient is φ = 326592.

The previous prime is 669463. The next prime is 669479. The reversal of 669465 is 564966.

669465 = T₁₄ + T₁₅ + ... + T₁₅₈.

It is a happy number.

669465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 669465 - 2¹ = 669463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (669463) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23071 + ... + 23099.

It is an arithmetic number, because the mean of its divisors is an integer number (27300).

2⁶⁶⁹⁴⁶⁵ is an apocalyptic number.

It is an amenable number.

669465 is a deficient number, since it is larger than the sum of its proper divisors (640935).

669465 is a wasteful number, since it uses less digits than its factorization.

669465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68 (or 56 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 669465 is about 818.2084086588. The cubic root of 669465 is about 87.4801043200.

The spelling of 669465 in words is "six hundred sixty-nine thousand, four hundred sixty-five".