68722907 has 4 divisors (see below), whose sum is σ = 74970456. Its totient is φ = 62475360.

The previous prime is 68722903. The next prime is 68722909. The reversal of 68722907 is 70922786.

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 68722907 - 2² = 68722903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68722903) 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, 3123758 + ... + 3123779.

It is an arithmetic number, because the mean of its divisors is an integer number (18742614).

Almost surely, 2^68722907 is an apocalyptic number.

68722907 is a deficient number, since it is larger than the sum of its proper divisors (6247549).

68722907 is a wasteful number, since it uses less digits than its factorization.

68722907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6247548.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 68722907 is about 8289.9280455261. The cubic root of 68722907 is about 409.6068152088.

It can be divided in two parts, 6872 and 2907, that added together give a palindrome (9779).

The spelling of 68722907 in words is "sixty-eight million, seven hundred twenty-two thousand, nine hundred seven".