68545445 has 16 divisors (see below), whose sum is σ = 91679040. Its totient is φ = 48893184.

The previous prime is 68545441. The next prime is 68545457. The reversal of 68545445 is 54454586.

It is a cyclic number.

It is not a de Polignac number, because 68545445 - 2² = 68545441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68545441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19607 + ... + 22836.

It is an arithmetic number, because the mean of its divisors is an integer number (5729940).

Almost surely, 2^68545445 is an apocalyptic number.

It is an amenable number.

68545445 is a deficient number, since it is larger than the sum of its proper divisors (23133595).

68545445 is a wasteful number, since it uses less digits than its factorization.

68545445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42484.

The product of its digits is 384000, while the sum is 41.

The square root of 68545445 is about 8279.2176562765. The cubic root of 68545445 is about 409.2539377082.

The spelling of 68545445 in words is "sixty-eight million, five hundred forty-five thousand, four hundred forty-five".