68456345 has 4 divisors (see below), whose sum is σ = 82147620. Its totient is φ = 54765072.

The previous prime is 68456329. The next prime is 68456351. The reversal of 68456345 is 54365486.

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 8904256 + 59552089 = 2984^2 + 7717^2 .

It is a cyclic number.

It is not a de Polignac number, because 68456345 - 2⁴ = 68456329 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6845630 + ... + 6845639.

It is an arithmetic number, because the mean of its divisors is an integer number (20536905).

Almost surely, 2^68456345 is an apocalyptic number.

It is an amenable number.

68456345 is a deficient number, since it is larger than the sum of its proper divisors (13691275).

68456345 is a wasteful number, since it uses less digits than its factorization.

68456345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13691274.

The product of its digits is 345600, while the sum is 41.

The square root of 68456345 is about 8273.8349633045. The cubic root of 68456345 is about 409.0765355144.

The spelling of 68456345 in words is "sixty-eight million, four hundred fifty-six thousand, three hundred forty-five".