206980972 has 48 divisors (see below), whose sum is σ = 403603200. Its totient is φ = 92093760.

The previous prime is 206980957. The next prime is 206980999. The reversal of 206980972 is 279089602.

It is a happy number.

206980972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×206980972² = 85682245540129568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 493779 + ... + 494197.

It is an arithmetic number, because the mean of its divisors is an integer number (8408400).

Almost surely, 2^206980972 is an apocalyptic number.

206980972 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

206980972 is a deficient number, since it is larger than the sum of its proper divisors (196622228).

206980972 is a wasteful number, since it uses less digits than its factorization.

206980972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646 (or 644 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 206980972 is about 14386.8332860293. The cubic root of 206980972 is about 591.5300438453.

The spelling of 206980972 in words is "two hundred six million, nine hundred eighty thousand, nine hundred seventy-two".