206717470 has 16 divisors (see below), whose sum is σ = 372260448. Its totient is φ = 82649440.

The previous prime is 206717461. The next prime is 206717477. The reversal of 206717470 is 74717602.

It is a super-2 number, since 2×206717470² = 85464224806401800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206717477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32340 + ... + 38200.

It is an arithmetic number, because the mean of its divisors is an integer number (23266278).

Almost surely, 2^206717470 is an apocalyptic number.

206717470 is a deficient number, since it is larger than the sum of its proper divisors (165542978).

206717470 is a wasteful number, since it uses less digits than its factorization.

206717470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9395.

The product of its (nonzero) digits is 16464, while the sum is 34.

The square root of 206717470 is about 14377.6726211164. The cubic root of 206717470 is about 591.2789168306.

The spelling of 206717470 in words is "two hundred six million, seven hundred seventeen thousand, four hundred seventy".