205621996 has 6 divisors (see below), whose sum is σ = 359838500. Its totient is φ = 102810996.

The previous prime is 205621993. The next prime is 205622023. The reversal of 205621996 is 699126502.

205621996 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (205621993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25702746 + ... + 25702753.

Almost surely, 2^205621996 is an apocalyptic number.

It is an amenable number.

205621996 is a deficient number, since it is larger than the sum of its proper divisors (154216504).

205621996 is a wasteful number, since it uses less digits than its factorization.

205621996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51405503 (or 51405501 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 205621996 is about 14339.5256546373. The cubic root of 205621996 is about 590.2325962163.

The spelling of 205621996 in words is "two hundred five million, six hundred twenty-one thousand, nine hundred ninety-six".