629889766 has 8 divisors (see below), whose sum is σ = 1030728744. Its totient is φ = 286313520.

The previous prime is 629889761. The next prime is 629889779. The reversal of 629889766 is 667988926.

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

It is a super-2 number, since 2×629889766² = 793522234623069512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (629889761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14315655 + ... + 14315698.

It is an arithmetic number, because the mean of its divisors is an integer number (128841093).

Almost surely, 2^629889766 is an apocalyptic number.

629889766 is a deficient number, since it is larger than the sum of its proper divisors (400838978).

629889766 is a wasteful number, since it uses less digits than its factorization.

629889766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28631366.

The product of its digits is 15676416, while the sum is 61.

The square root of 629889766 is about 25097.6047861146. The cubic root of 629889766 is about 857.2118856286.

The spelling of 629889766 in words is "six hundred twenty-nine million, eight hundred eighty-nine thousand, seven hundred sixty-six".