629995220 has 12 divisors (see below), whose sum is σ = 1322990004. Its totient is φ = 251998080.

The previous prime is 629995211. The next prime is 629995229. The reversal of 629995220 is 22599926.

It is an interprime number because it is at equal distance from previous prime (629995211) and next prime (629995229).

It can be written as a sum of positive squares in 2 ways, for example, as 401441296 + 228553924 = 20036^2 + 15118^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (629995229) 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, 15749861 + ... + 15749900.

It is an arithmetic number, because the mean of its divisors is an integer number (110249167).

Almost surely, 2^629995220 is an apocalyptic number.

It is an amenable number.

629995220 is an abundant number, since it is smaller than the sum of its proper divisors (692994784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

629995220 is a wasteful number, since it uses less digits than its factorization.

629995220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31499770 (or 31499768 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 629995220 is about 25099.7055759624. The cubic root of 629995220 is about 857.2597201244.

The spelling of 629995220 in words is "six hundred twenty-nine million, nine hundred ninety-five thousand, two hundred twenty".