206457970 has 16 divisors (see below), whose sum is σ = 373514328. Its totient is φ = 82163200.

The previous prime is 206457967. The next prime is 206457991. The reversal of 206457970 is 79754602.

It can be written as a sum of positive squares in 4 ways, for example, as 204461401 + 1996569 = 14299^2 + 1413^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50431 + ... + 54370.

Almost surely, 2^206457970 is an apocalyptic number.

206457970 is a deficient number, since it is larger than the sum of its proper divisors (167056358).

206457970 is a wasteful number, since it uses less digits than its factorization.

206457970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105005.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 206457970 is about 14368.6453780445. The cubic root of 206457970 is about 591.0313952113.

The spelling of 206457970 in words is "two hundred six million, four hundred fifty-seven thousand, nine hundred seventy".