205622630 has 16 divisors (see below), whose sum is σ = 370291824. Its totient is φ = 82211040.

The previous prime is 205622621. The next prime is 205622639. The reversal of 205622630 is 36226502.

It is an interprime number because it is at equal distance from previous prime (205622621) and next prime (205622639).

It is a self number, because there is not a number n which added to its sum of digits gives 205622630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205622639) 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, 30224 + ... + 36396.

It is an arithmetic number, because the mean of its divisors is an integer number (23143239).

Almost surely, 2^205622630 is an apocalyptic number.

205622630 is a deficient number, since it is larger than the sum of its proper divisors (164669194).

205622630 is a wasteful number, since it uses less digits than its factorization.

205622630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9511.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 205622630 is about 14339.5477613487. The cubic root of 205622630 is about 590.2332028425.

The spelling of 205622630 in words is "two hundred five million, six hundred twenty-two thousand, six hundred thirty".