681462938 has 32 divisors (see below), whose sum is σ = 1141257600. Its totient is φ = 303016896.

The previous prime is 681462931. The next prime is 681462953. The reversal of 681462938 is 839264186.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 681462892 and 681462901.

It is not an unprimeable number, because it can be changed into a prime (681462931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 556595 + ... + 557817.

It is an arithmetic number, because the mean of its divisors is an integer number (35664300).

Almost surely, 2^681462938 is an apocalyptic number.

681462938 is a deficient number, since it is larger than the sum of its proper divisors (459794662).

681462938 is a wasteful number, since it uses less digits than its factorization.

681462938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006.

The product of its digits is 497664, while the sum is 47.

The square root of 681462938 is about 26104.8451058419. The cubic root of 681462938 is about 879.9960993284.

The spelling of 681462938 in words is "six hundred eighty-one million, four hundred sixty-two thousand, nine hundred thirty-eight".