669340010 has 16 divisors (see below), whose sum is σ = 1246357800. Its totient is φ = 258503616.

The previous prime is 669339989. The next prime is 669340051. The reversal of 669340010 is 10043966.

It can be written as a sum of positive squares in 4 ways, for example, as 566297209 + 103042801 = 23797^2 + 10151^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1153745 + ... + 1154324.

Almost surely, 2^669340010 is an apocalyptic number.

669340010 is a deficient number, since it is larger than the sum of its proper divisors (577017790).

669340010 is a wasteful number, since it uses less digits than its factorization.

669340010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308105.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 669340010 is about 25871.6062508689. The cubic root of 669340010 is about 874.7465976415.

Adding to 669340010 its reverse (10043966), we get a palindrome (679383976).

The spelling of 669340010 in words is "six hundred sixty-nine million, three hundred forty thousand, ten".