681828486 has 16 divisors (see below), whose sum is σ = 1443872304. Its totient is φ = 213906944.

The previous prime is 681828457. The next prime is 681828487. The reversal of 681828486 is 684828186.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681828487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3342195 + ... + 3342398.

It is an arithmetic number, because the mean of its divisors is an integer number (90242019).

Almost surely, 2^681828486 is an apocalyptic number.

681828486 is an abundant number, since it is smaller than the sum of its proper divisors (762043818).

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

681828486 is a wasteful number, since it uses less digits than its factorization.

681828486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6684615.

The product of its digits is 1179648, while the sum is 51.

The square root of 681828486 is about 26111.8457026691. The cubic root of 681828486 is about 880.1534193601.

The spelling of 681828486 in words is "six hundred eighty-one million, eight hundred twenty-eight thousand, four hundred eighty-six".