68343657 has 8 divisors (see below), whose sum is σ = 91728960. Its totient is φ = 45260400.

The previous prime is 68343647. The next prime is 68343661. The reversal of 68343657 is 75634386.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68343657 - 2⁷ = 68343529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68343647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74982 + ... + 75887.

It is an arithmetic number, because the mean of its divisors is an integer number (11466120).

Almost surely, 2^68343657 is an apocalyptic number.

It is an amenable number.

68343657 is a deficient number, since it is larger than the sum of its proper divisors (23385303).

68343657 is a wasteful number, since it uses less digits than its factorization.

68343657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151023.

The product of its digits is 362880, while the sum is 42.

The square root of 68343657 is about 8267.0222571371. The cubic root of 68343657 is about 408.8519479362.

The spelling of 68343657 in words is "sixty-eight million, three hundred forty-three thousand, six hundred fifty-seven".