68370681 has 4 divisors (see below), whose sum is σ = 91160912. Its totient is φ = 45580452.

The previous prime is 68370677. The next prime is 68370707. The reversal of 68370681 is 18607386.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 68370681 - 2² = 68370677 is a prime.

It is a super-2 number, since 2×68370681² = 9349100040807522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68370611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11395111 + ... + 11395116.

It is an arithmetic number, because the mean of its divisors is an integer number (22790228).

Almost surely, 2^68370681 is an apocalyptic number.

It is an amenable number.

68370681 is a deficient number, since it is larger than the sum of its proper divisors (22790231).

68370681 is a wasteful number, since it uses less digits than its factorization.

68370681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22790230.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 68370681 is about 8268.6565414219. The cubic root of 68370681 is about 408.9058293523.

The spelling of 68370681 in words is "sixty-eight million, three hundred seventy thousand, six hundred eighty-one".