681107401 has 16 divisors (see below), whose sum is σ = 755004096. Its totient is φ = 610456896.

The previous prime is 681107381. The next prime is 681107411. The reversal of 681107401 is 104701186.

It is a de Polignac number, because none of the positive numbers 2^k-681107401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 681107401.

It is not an unprimeable number, because it can be changed into a prime (681107411) 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, 93186 + ... + 100228.

It is an arithmetic number, because the mean of its divisors is an integer number (47187756).

Almost surely, 2^681107401 is an apocalyptic number.

It is an amenable number.

681107401 is a deficient number, since it is larger than the sum of its proper divisors (73896695).

681107401 is a wasteful number, since it uses less digits than its factorization.

681107401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7272.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 681107401 is about 26098.0344279028. The cubic root of 681107401 is about 879.8430337287.

Adding to 681107401 its reverse (104701186), we get a palindrome (785808587).

The spelling of 681107401 in words is "six hundred eighty-one million, one hundred seven thousand, four hundred one".