629986031 has 8 divisors (see below), whose sum is σ = 657712224. Its totient is φ = 602287840.

The previous prime is 629986009. The next prime is 629986057. The reversal of 629986031 is 130689926.

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

It is a cyclic number.

It is not a de Polignac number, because 629986031 - 2²⁶ = 562877167 is a prime.

It is a super-2 number, since 2×629986031² = 793764798510265922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (629986001) 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, 48401 + ... + 60021.

It is an arithmetic number, because the mean of its divisors is an integer number (82214028).

Almost surely, 2^629986031 is an apocalyptic number.

629986031 is a deficient number, since it is larger than the sum of its proper divisors (27726193).

629986031 is a wasteful number, since it uses less digits than its factorization.

629986031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14001.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 629986031 is about 25099.5225253390. The cubic root of 629986031 is about 857.2555521574.

The spelling of 629986031 in words is "six hundred twenty-nine million, nine hundred eighty-six thousand, thirty-one".