68657427 has 6 divisors (see below), whose sum is σ = 99171852. Its totient is φ = 45771612.

The previous prime is 68657401. The next prime is 68657437. The reversal of 68657427 is 72475686.

It is not a de Polignac number, because 68657427 - 2⁶ = 68657363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68657437) 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 5 ways as a sum of consecutive naturals, for example, 3814293 + ... + 3814310.

It is an arithmetic number, because the mean of its divisors is an integer number (16528642).

Almost surely, 2^68657427 is an apocalyptic number.

68657427 is a deficient number, since it is larger than the sum of its proper divisors (30514425).

68657427 is a wasteful number, since it uses less digits than its factorization.

68657427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7628609 (or 7628606 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 68657427 is about 8285.9777334965. The cubic root of 68657427 is about 409.4766811268.

The spelling of 68657427 in words is "sixty-eight million, six hundred fifty-seven thousand, four hundred twenty-seven".