681776950 has 48 divisors (see below), whose sum is σ = 1317951360. Its totient is φ = 262080000.

The previous prime is 681776947. The next prime is 681776951. The reversal of 681776950 is 59677186.

It is a junction number, because it is equal to n+sod(n) for n = 681776894 and 681776903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681776951) 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, 348475 + ... + 350425.

It is an arithmetic number, because the mean of its divisors is an integer number (27457320).

Almost surely, 2^681776950 is an apocalyptic number.

681776950 is a deficient number, since it is larger than the sum of its proper divisors (636174410).

681776950 is a wasteful number, since it uses less digits than its factorization.

681776950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2233 (or 2228 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 49.

The square root of 681776950 is about 26110.8588522094. The cubic root of 681776950 is about 880.1312433386.

The spelling of 681776950 in words is "six hundred eighty-one million, seven hundred seventy-six thousand, nine hundred fifty".