68012345 has 4 divisors (see below), whose sum is σ = 81614820. Its totient is φ = 54409872.

The previous prime is 68012341. The next prime is 68012353. The reversal of 68012345 is 54321086.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47554816 + 20457529 = 6896^2 + 4523^2 .

It is a cyclic number.

It is not a de Polignac number, because 68012345 - 2² = 68012341 is a prime.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (68012341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6801230 + ... + 6801239.

It is an arithmetic number, because the mean of its divisors is an integer number (20403705).

Almost surely, 2^68012345 is an apocalyptic number.

It is an amenable number.

68012345 is a deficient number, since it is larger than the sum of its proper divisors (13602475).

68012345 is a wasteful number, since it uses less digits than its factorization.

68012345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13602474.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 68012345 is about 8246.9597428386. The cubic root of 68012345 is about 408.1902087130.

The spelling of 68012345 in words is "sixty-eight million, twelve thousand, three hundred forty-five".