681408010 has 8 divisors (see below), whose sum is σ = 1226534436. Its totient is φ = 272563200.

The previous prime is 681407917. The next prime is 681408017. The reversal of 681408010 is 10804186.

It can be written as a sum of positive squares in 2 ways, for example, as 668584449 + 12823561 = 25857^2 + 3581^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 681408010.

It is not an unprimeable number, because it can be changed into a prime (681408017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34070391 + ... + 34070410.

Almost surely, 2^681408010 is an apocalyptic number.

681408010 is a deficient number, since it is larger than the sum of its proper divisors (545126426).

681408010 is a wasteful number, since it uses less digits than its factorization.

681408010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68140808.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 681408010 is about 26103.7930194062. The cubic root of 681408010 is about 879.9724552329.

The spelling of 681408010 in words is "six hundred eighty-one million, four hundred eight thousand, ten".