206974845 has 80 divisors (see below), whose sum is σ = 462642048. Its totient is φ = 86002560.

The previous prime is 206974819. The next prime is 206974853. The reversal of 206974845 is 548479602.

It is a happy number.

It is not a de Polignac number, because 206974845 - 2⁸ = 206974589 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 206974845.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 27867 + ... + 34503.

Almost surely, 2^206974845 is an apocalyptic number.

It is an amenable number.

206974845 is an abundant number, since it is smaller than the sum of its proper divisors (255667203).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206974845 is a wasteful number, since it uses less digits than its factorization.

206974845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6672 (or 6663 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 206974845 is about 14386.6203466971. The cubic root of 206974845 is about 591.5242070119.

The spelling of 206974845 in words is "two hundred six million, nine hundred seventy-four thousand, eight hundred forty-five".