206451245 has 96 divisors (see below), whose sum is σ = 354170880. Its totient is φ = 111870720.

The previous prime is 206451239. The next prime is 206451263. The reversal of 206451245 is 542154602.

It is not a de Polignac number, because 206451245 - 2⁶ = 206451181 is a prime.

It is a Curzon number.

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 1236152 + ... + 1236318.

It is an arithmetic number, because the mean of its divisors is an integer number (3689280).

Almost surely, 2^206451245 is an apocalyptic number.

It is an amenable number.

206451245 is a deficient number, since it is larger than the sum of its proper divisors (147719635).

206451245 is a wasteful number, since it uses less digits than its factorization.

206451245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 206451245 is about 14368.4113596459. The cubic root of 206451245 is about 591.0249778772.

The spelling of 206451245 in words is "two hundred six million, four hundred fifty-one thousand, two hundred forty-five".