669628495 has 8 divisors (see below), whose sum is σ = 845846640. Its totient is φ = 507507840.

The previous prime is 669628493. The next prime is 669628501. The reversal of 669628495 is 594826966.

It is a happy number.

669628495 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 669628495 - 2¹ = 669628493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669628493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3524266 + ... + 3524455.

It is an arithmetic number, because the mean of its divisors is an integer number (105730830).

Almost surely, 2^669628495 is an apocalyptic number.

669628495 is a deficient number, since it is larger than the sum of its proper divisors (176218145).

669628495 is a wasteful number, since it uses less digits than its factorization.

669628495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7048745.

The product of its digits is 5598720, while the sum is 55.

The square root of 669628495 is about 25877.1809708863. The cubic root of 669628495 is about 874.8722512818.

It can be divided in two parts, 66962 and 8495, that added together give a palindrome (75457).

The spelling of 669628495 in words is "six hundred sixty-nine million, six hundred twenty-eight thousand, four hundred ninety-five".