629126644 has 12 divisors (see below), whose sum is σ = 1105541668. Its totient is φ = 313257600.

The previous prime is 629126627. The next prime is 629126653. The reversal of 629126644 is 446621926.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 202208400 + 426918244 = 14220^2 + 20662^2 .

It is a junction number, because it is equal to n+sod(n) for n = 629126597 and 629126606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325347 + ... + 327274.

Almost surely, 2^629126644 is an apocalyptic number.

It is an amenable number.

629126644 is a deficient number, since it is larger than the sum of its proper divisors (476415024).

629126644 is a wasteful number, since it uses less digits than its factorization.

629126644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652866 (or 652864 counting only the distinct ones).

The product of its digits is 124416, while the sum is 40.

The square root of 629126644 is about 25082.3970943768. The cubic root of 629126644 is about 856.8655702170.

The spelling of 629126644 in words is "six hundred twenty-nine million, one hundred twenty-six thousand, six hundred forty-four".