681499102 has 16 divisors (see below), whose sum is σ = 1062940032. Its totient is φ = 327346560.

The previous prime is 681499097. The next prime is 681499123. The reversal of 681499102 is 201994186.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31623 + ... + 48610.

It is an arithmetic number, because the mean of its divisors is an integer number (66433752).

Almost surely, 2^681499102 is an apocalyptic number.

681499102 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

681499102 is a deficient number, since it is larger than the sum of its proper divisors (381440930).

681499102 is a wasteful number, since it uses less digits than its factorization.

681499102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80403.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 681499102 is about 26105.5377650030. The cubic root of 681499102 is about 880.0116656511.

The spelling of 681499102 in words is "six hundred eighty-one million, four hundred ninety-nine thousand, one hundred two".