681291875 has 40 divisors (see below), whose sum is σ = 951782832. Its totient is φ = 483200000.

The previous prime is 681291869. The next prime is 681291889. The reversal of 681291875 is 578192186.

It is not a de Polignac number, because 681291875 - 2⁶ = 681291811 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 280667 + ... + 283083.

Almost surely, 2^681291875 is an apocalyptic number.

681291875 is a deficient number, since it is larger than the sum of its proper divisors (270490957).

681291875 is a wasteful number, since it uses less digits than its factorization.

681291875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2489 (or 2474 counting only the distinct ones).

The product of its digits is 241920, while the sum is 47.

The square root of 681291875 is about 26101.5684394636. The cubic root of 681291875 is about 879.9224600239.

The spelling of 681291875 in words is "six hundred eighty-one million, two hundred ninety-one thousand, eight hundred seventy-five".