681393050 has 48 divisors (see below), whose sum is σ = 1396681440. Its totient is φ = 245730240.

The previous prime is 681393001. The next prime is 681393059. The reversal of 681393050 is 50393186.

It is a self number, because there is not a number n which added to its sum of digits gives 681393050.

It is not an unprimeable number, because it can be changed into a prime (681393059) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15761 + ... + 40139.

It is an arithmetic number, because the mean of its divisors is an integer number (29097530).

Almost surely, 2^681393050 is an apocalyptic number.

681393050 is an abundant number, since it is smaller than the sum of its proper divisors (715288390).

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

681393050 is a wasteful number, since it uses less digits than its factorization.

681393050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24447 (or 24442 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 681393050 is about 26103.5064694382. The cubic root of 681393050 is about 879.9660153887.

The spelling of 681393050 in words is "six hundred eighty-one million, three hundred ninety-three thousand, fifty".