206561030 has 16 divisors (see below), whose sum is σ = 400410864. Its totient is φ = 76268640.

The previous prime is 206561023. The next prime is 206561053. The reversal of 206561030 is 30165602.

It is a super-2 number, since 2×206561030² = 85334918229321800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 206560987 and 206561005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 794336 + ... + 794595.

It is an arithmetic number, because the mean of its divisors is an integer number (25025679).

Almost surely, 2^206561030 is an apocalyptic number.

206561030 is a deficient number, since it is larger than the sum of its proper divisors (193849834).

206561030 is a wasteful number, since it uses less digits than its factorization.

206561030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588951.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 206561030 is about 14372.2312116108. The cubic root of 206561030 is about 591.1297228323.

The spelling of 206561030 in words is "two hundred six million, five hundred sixty-one thousand, thirty".