681474867 has 16 divisors (see below), whose sum is σ = 918514080. Its totient is φ = 449390592.

The previous prime is 681474847. The next prime is 681474907. The reversal of 681474867 is 768474186.

It is a happy number.

It is not a de Polignac number, because 681474867 - 2⁸ = 681474611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (681474847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246163 + ... + 248915.

It is an arithmetic number, because the mean of its divisors is an integer number (57407130).

Almost surely, 2^681474867 is an apocalyptic number.

681474867 is a deficient number, since it is larger than the sum of its proper divisors (237039213).

681474867 is a wasteful number, since it uses less digits than its factorization.

681474867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3622.

The product of its digits is 1806336, while the sum is 51.

The square root of 681474867 is about 26105.0735873316. The cubic root of 681474867 is about 880.0012340720.

The spelling of 681474867 in words is "six hundred eighty-one million, four hundred seventy-four thousand, eight hundred sixty-seven".