1000561206 has 8 divisors (see below), whose sum is σ = 2001122424. Its totient is φ = 333520400.

The previous prime is 1000561193. The next prime is 1000561207. The reversal of 1000561206 is 6021650001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

1000561206 is an admirable number.

It is a super-2 number, since 2×1000561206² = 2002245453904348872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000561207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83380095 + ... + 83380106.

It is an arithmetic number, because the mean of its divisors is an integer number (250140303).

Almost surely, 2^1000561206 is an apocalyptic number.

1000561206 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1000561206 is a wasteful number, since it uses less digits than its factorization.

1000561206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166760206.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1000561206 is about 31631.6488030580. The cubic root of 1000561206 is about 1000.1870336829.

The spelling of 1000561206 in words is "one billion, five hundred sixty-one thousand, two hundred six".