629855997 has 8 divisors (see below), whose sum is σ = 841141440. Its totient is φ = 419237280.

The previous prime is 629855969. The next prime is 629855999. The reversal of 629855997 is 799558926.

It is a happy number.

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

It is not a de Polignac number, because 629855997 - 2⁸ = 629855741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 629855997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (629855999) 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, 164472 + ... + 168257.

It is an arithmetic number, because the mean of its divisors is an integer number (105142680).

Almost surely, 2^629855997 is an apocalyptic number.

It is an amenable number.

629855997 is a deficient number, since it is larger than the sum of its proper divisors (211285443).

629855997 is a wasteful number, since it uses less digits than its factorization.

629855997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333363.

The product of its digits is 12247200, while the sum is 60.

The square root of 629855997 is about 25096.9320236558. The cubic root of 629855997 is about 857.1965667019.

The spelling of 629855997 in words is "six hundred twenty-nine million, eight hundred fifty-five thousand, nine hundred ninety-seven".