68561007 has 4 divisors (see below), whose sum is σ = 91414680. Its totient is φ = 45707336.

The previous prime is 68560993. The next prime is 68561027. The reversal of 68561007 is 70016586.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68561007 - 2⁴ = 68560991 is a prime.

It is a super-2 number, since 2×68561007² = 9401223361708098, which contains 22 as substring.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68561027) 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, 11426832 + ... + 11426837.

It is an arithmetic number, because the mean of its divisors is an integer number (22853670).

Almost surely, 2^68561007 is an apocalyptic number.

68561007 is a deficient number, since it is larger than the sum of its proper divisors (22853673).

68561007 is a wasteful number, since it uses less digits than its factorization.

68561007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22853672.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 68561007 is about 8280.1574260397. The cubic root of 68561007 is about 409.2849065925.

The spelling of 68561007 in words is "sixty-eight million, five hundred sixty-one thousand, seven".