206632100 has 18 divisors (see below), whose sum is σ = 448391874. Its totient is φ = 82652800.

The previous prime is 206632079. The next prime is 206632103. The reversal of 206632100 is 1236602.

It can be written as a sum of positive squares in 3 ways, for example, as 65545216 + 141086884 = 8096^2 + 11878^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (206632103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1033061 + ... + 1033260.

Almost surely, 2^206632100 is an apocalyptic number.

206632100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206632100 is an abundant number, since it is smaller than the sum of its proper divisors (241759774).

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

206632100 is a wasteful number, since it uses less digits than its factorization.

206632100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2066335 (or 2066328 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 206632100 is about 14374.7034752025. The cubic root of 206632100 is about 591.1975103398.

Adding to 206632100 its reverse (1236602), we get a palindrome (207868702).

The spelling of 206632100 in words is "two hundred six million, six hundred thirty-two thousand, one hundred".