206720514 has 216 divisors, whose sum is σ = 620883900. Its totient is φ = 49230720.

The previous prime is 206720491. The next prime is 206720531. The reversal of 206720514 is 415027602.

It can be written as a sum of positive squares in 2 ways, for example, as 173369889 + 33350625 = 13167^2 + 5775^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 1387312 + ... + 1387460.

Almost surely, 2^206720514 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206720514, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310441950).

206720514 is an abundant number, since it is smaller than the sum of its proper divisors (414163386).

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

206720514 is a wasteful number, since it uses less digits than its factorization.

206720514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 206720514 is about 14377.7784793062. The cubic root of 206720514 is about 591.2818190916.

The spelling of 206720514 in words is "two hundred six million, seven hundred twenty thousand, five hundred fourteen".