68386507 has 6 divisors (see below), whose sum is σ = 79551708. Its totient is φ = 58616964.

The previous prime is 68386481. The next prime is 68386517. The reversal of 68386507 is 70568386.

It is not a de Polignac number, because 68386507 - 2¹⁵ = 68353739 is a prime.

It is a super-2 number, since 2×68386507² = 9353428679322098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68386517) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 697773 + ... + 697870.

It is an arithmetic number, because the mean of its divisors is an integer number (13258618).

Almost surely, 2^68386507 is an apocalyptic number.

68386507 is a deficient number, since it is larger than the sum of its proper divisors (11165201).

68386507 is a wasteful number, since it uses less digits than its factorization.

68386507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395657 (or 1395650 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 68386507 is about 8269.6134734339. The cubic root of 68386507 is about 408.9373772045.

The spelling of 68386507 in words is "sixty-eight million, three hundred eighty-six thousand, five hundred seven".