206670072 has 64 divisors (see below), whose sum is σ = 596056320. Its totient is φ = 58491648.

The previous prime is 206670067. The next prime is 206670091. The reversal of 206670072 is 270076602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12228 + ... + 23724.

It is an arithmetic number, because the mean of its divisors is an integer number (9313380).

Almost surely, 2^206670072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206670072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298028160).

206670072 is an abundant number, since it is smaller than the sum of its proper divisors (389386248).

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

206670072 is a wasteful number, since it uses less digits than its factorization.

206670072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11620 (or 11616 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 206670072 is about 14376.0242069913. The cubic root of 206670072 is about 591.2337221657.

The spelling of 206670072 in words is "two hundred six million, six hundred seventy thousand, seventy-two".