68522518 has 4 divisors (see below), whose sum is σ = 102783780. Its totient is φ = 34261258.

The previous prime is 68522513. The next prime is 68522533. The reversal of 68522518 is 81522586.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68522513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17130628 + ... + 17130631.

It is an arithmetic number, because the mean of its divisors is an integer number (25695945).

Almost surely, 2^68522518 is an apocalyptic number.

68522518 is a deficient number, since it is larger than the sum of its proper divisors (34261262).

68522518 is a wasteful number, since it uses less digits than its factorization.

68522518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34261261.

The product of its digits is 38400, while the sum is 37.

The square root of 68522518 is about 8277.8329289736. The cubic root of 68522518 is about 409.2083036944.

The spelling of 68522518 in words is "sixty-eight million, five hundred twenty-two thousand, five hundred eighteen".