206929481 has 6 divisors (see below), whose sum is σ = 227451546. Its totient is φ = 188117600.

The previous prime is 206929469. The next prime is 206929483. The reversal of 206929481 is 184929602.

It can be written as a sum of positive squares in only one way, i.e., 107827456 + 99102025 = 10384^2 + 9955^2 .

It is not a de Polignac number, because 206929481 - 2⁶ = 206929417 is a prime.

It is a super-2 number, since 2×206929481² = 85639620213858722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206929483) 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, 854960 + ... + 855201.

It is an arithmetic number, because the mean of its divisors is an integer number (37908591).

Almost surely, 2^206929481 is an apocalyptic number.

It is an amenable number.

206929481 is a deficient number, since it is larger than the sum of its proper divisors (20522065).

206929481 is a wasteful number, since it uses less digits than its factorization.

206929481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710183 (or 1710172 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 206929481 is about 14385.0436565205. The cubic root of 206929481 is about 591.4809878068.

The spelling of 206929481 in words is "two hundred six million, nine hundred twenty-nine thousand, four hundred eighty-one".