681476801 has 4 divisors (see below), whose sum is σ = 681532500. Its totient is φ = 681421104.

The previous prime is 681476791. The next prime is 681476833. The reversal of 681476801 is 108674186.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 196420225 + 485056576 = 14015^2 + 22024^2 .

It is a cyclic number.

It is not a de Polignac number, because 681476801 - 2²⁶ = 614367937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (681476881) 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, 626 + ... + 36923.

It is an arithmetic number, because the mean of its divisors is an integer number (170383125).

Almost surely, 2^681476801 is an apocalyptic number.

It is an amenable number.

681476801 is a deficient number, since it is larger than the sum of its proper divisors (55699).

681476801 is a wasteful number, since it uses less digits than its factorization.

681476801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55698.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 681476801 is about 26105.1106299131. The cubic root of 681476801 is about 880.0020665413.

The spelling of 681476801 in words is "six hundred eighty-one million, four hundred seventy-six thousand, eight hundred one".