629788643 has 8 divisors (see below), whose sum is σ = 687590640. Its totient is φ = 572078080.

The previous prime is 629788619. The next prime is 629788651. The reversal of 629788643 is 346887926.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-629788643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (629788843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8030 + ... + 36387.

It is an arithmetic number, because the mean of its divisors is an integer number (85948830).

Almost surely, 2^629788643 is an apocalyptic number.

629788643 is a deficient number, since it is larger than the sum of its proper divisors (57801997).

629788643 is a wasteful number, since it uses less digits than its factorization.

629788643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45717.

The product of its digits is 3483648, while the sum is 53.

The square root of 629788643 is about 25095.5901106151. The cubic root of 629788643 is about 857.1660106828.

The spelling of 629788643 in words is "six hundred twenty-nine million, seven hundred eighty-eight thousand, six hundred forty-three".