629713221 has 16 divisors (see below), whose sum is σ = 869348160. Its totient is φ = 404969600.

The previous prime is 629713211. The next prime is 629713237. The reversal of 629713221 is 122317926.

It is a cyclic number.

It is not a de Polignac number, because 629713221 - 2⁷ = 629713093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (629713211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122146 + ... + 127196.

It is an arithmetic number, because the mean of its divisors is an integer number (54334260).

Almost surely, 2^629713221 is an apocalyptic number.

It is an amenable number.

629713221 is a deficient number, since it is larger than the sum of its proper divisors (239634939).

629713221 is a wasteful number, since it uses less digits than its factorization.

629713221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6516.

The product of its digits is 9072, while the sum is 33.

The square root of 629713221 is about 25094.0873713311. The cubic root of 629713221 is about 857.1317919246.

The spelling of 629713221 in words is "six hundred twenty-nine million, seven hundred thirteen thousand, two hundred twenty-one".