68028507 has 12 divisors (see below), whose sum is σ = 98345104. Its totient is φ = 45314640.

The previous prime is 68028491. The next prime is 68028511. The reversal of 68028507 is 70582086.

It is not a de Polignac number, because 68028507 - 2⁴ = 68028491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68028547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12258 + ... + 16920.

Almost surely, 2^68028507 is an apocalyptic number.

68028507 is a deficient number, since it is larger than the sum of its proper divisors (30316597).

68028507 is a wasteful number, since it uses less digits than its factorization.

68028507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6290 (or 6287 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 68028507 is about 8247.9395608843. The cubic root of 68028507 is about 408.2225393516. Note that the first 3 decimals are identical.

The spelling of 68028507 in words is "sixty-eight million, twenty-eight thousand, five hundred seven".