206715500 has 48 divisors (see below), whose sum is σ = 453031488. Its totient is φ = 82400000.

The previous prime is 206715479. The next prime is 206715521. The reversal of 206715500 is 5517602.

It is an interprime number because it is at equal distance from previous prime (206715479) and next prime (206715521).

It is a self number, because there is not a number n which added to its sum of digits gives 206715500.

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 15 ways as a sum of consecutive naturals, for example, 199985 + ... + 201015.

It is an arithmetic number, because the mean of its divisors is an integer number (9438156).

Almost surely, 2^206715500 is an apocalyptic number.

206715500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206715500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226515744).

206715500 is an abundant number, since it is smaller than the sum of its proper divisors (246315988).

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

206715500 is a wasteful number, since it uses less digits than its factorization.

206715500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451 (or 1439 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 206715500 is about 14377.6041119513. The cubic root of 206715500 is about 591.2770385452.

The spelling of 206715500 in words is "two hundred six million, seven hundred fifteen thousand, five hundred".