629656873 has 4 divisors (see below), whose sum is σ = 629733760. Its totient is φ = 629579988.

The previous prime is 629656837. The next prime is 629656877. The reversal of 629656873 is 378656926.

629656873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 629656873 - 2²⁹ = 92785961 is a prime.

It is a super-2 number, since 2×629656873² = 792935555432276258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 629656873.

It is not an unprimeable number, because it can be changed into a prime (629656877) 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, 24465 + ... + 43102.

It is an arithmetic number, because the mean of its divisors is an integer number (157433440).

Almost surely, 2^629656873 is an apocalyptic number.

It is an amenable number.

629656873 is a deficient number, since it is larger than the sum of its proper divisors (76887).

629656873 is an equidigital number, since it uses as much as digits as its factorization.

629656873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76886.

The product of its digits is 3265920, while the sum is 52.

The square root of 629656873 is about 25092.9646116197. The cubic root of 629656873 is about 857.1062252056.

The spelling of 629656873 in words is "six hundred twenty-nine million, six hundred fifty-six thousand, eight hundred seventy-three".