681475315 has 8 divisors (see below), whose sum is σ = 825007968. Its totient is φ = 540355200.

The previous prime is 681475313. The next prime is 681475393. The reversal of 681475315 is 513574186.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 681475315 - 2¹ = 681475313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (681475313) 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, 602511 + ... + 603640.

It is an arithmetic number, because the mean of its divisors is an integer number (103125996).

Almost surely, 2^681475315 is an apocalyptic number.

681475315 is a deficient number, since it is larger than the sum of its proper divisors (143532653).

681475315 is a wasteful number, since it uses less digits than its factorization.

681475315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206269.

The product of its digits is 100800, while the sum is 40.

The square root of 681475315 is about 26105.0821680377. The cubic root of 681475315 is about 880.0014269088.

The spelling of 681475315 in words is "six hundred eighty-one million, four hundred seventy-five thousand, three hundred fifteen".