681092030089 has 3 divisors (see below), whose sum is σ = 681092855373. Its totient is φ = 681091204806.

The previous prime is 681092030063. The next prime is 681092030093. The reversal of 681092030089 is 980030290186.

The square root of 681092030089 is 825283.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 681092030089 - 2³⁹ = 131336216201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (681092030039) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 412642 + ... + 1237924.

It is an arithmetic number, because the mean of its divisors is an integer number (227030951791).

Almost surely, 2^681092030089 is an apocalyptic number.

681092030089 is the 825283-rd square number.

681092030089 is the 412642-nd centered octagonal number.

It is an amenable number.

681092030089 is a deficient number, since it is larger than the sum of its proper divisors (825284).

681092030089 is an frugal number, since it uses more digits than its factorization.

681092030089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650566 (or 825283 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 46.

The spelling of 681092030089 in words is "six hundred eighty-one billion, ninety-two million, thirty thousand, eighty-nine".