206746749 has 40 divisors (see below), whose sum is σ = 344158848. Its totient is φ = 122610240.

The previous prime is 206746717. The next prime is 206746759. The reversal of 206746749 is 947647602.

It is not a de Polignac number, because 206746749 - 2⁵ = 206746717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206746759) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 39409 + ... + 44345.

Almost surely, 2^206746749 is an apocalyptic number.

It is an amenable number.

206746749 is a deficient number, since it is larger than the sum of its proper divisors (137412099).

206746749 is a wasteful number, since it uses less digits than its factorization.

206746749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5007 (or 4998 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The square root of 206746749 is about 14378.6907957574. The cubic root of 206746749 is about 591.3068313204.

The spelling of 206746749 in words is "two hundred six million, seven hundred forty-six thousand, seven hundred forty-nine".