68678247 has 8 divisors (see below), whose sum is σ = 99895680. Its totient is φ = 41623160.

The previous prime is 68678243. The next prime is 68678261. The reversal of 68678247 is 74287686.

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 68678247 - 2² = 68678243 is a prime.

It is a super-2 number, since 2×68678247² = 9433403221986018, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68678196 and 68678205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68678243) 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, 1040547 + ... + 1040612.

It is an arithmetic number, because the mean of its divisors is an integer number (12486960).

Almost surely, 2^68678247 is an apocalyptic number.

68678247 is a deficient number, since it is larger than the sum of its proper divisors (31217433).

68678247 is a wasteful number, since it uses less digits than its factorization.

68678247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2081173.

The product of its digits is 903168, while the sum is 48.

The square root of 68678247 is about 8287.2339776309. The cubic root of 68678247 is about 409.5180674865.

The spelling of 68678247 in words is "sixty-eight million, six hundred seventy-eight thousand, two hundred forty-seven".