68367257 has 8 divisors (see below), whose sum is σ = 78293376. Its totient is φ = 58480992.

The previous prime is 68367241. The next prime is 68367259. The reversal of 68367257 is 75276386.

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

It is a cyclic number.

It is not a de Polignac number, because 68367257 - 2⁴ = 68367241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68367259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6188 + ... + 13229.

It is an arithmetic number, because the mean of its divisors is an integer number (9786672).

Almost surely, 2^68367257 is an apocalyptic number.

It is an amenable number.

68367257 is a deficient number, since it is larger than the sum of its proper divisors (9926119).

68367257 is a wasteful number, since it uses less digits than its factorization.

68367257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19927.

The product of its digits is 423360, while the sum is 44.

The square root of 68367257 is about 8268.4494918939. The cubic root of 68367257 is about 408.8990032445.

The spelling of 68367257 in words is "sixty-eight million, three hundred sixty-seven thousand, two hundred fifty-seven".