68572518 has 16 divisors (see below), whose sum is σ = 156737280. Its totient is φ = 19592136.

The previous prime is 68572451. The next prime is 68572519. The reversal of 68572518 is 81527586.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1632679 = 68572518 / (6 + 8 + 5 + 7 + 2 + 5 + 1 + 8).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 68572518.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68572519) 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, 816298 + ... + 816381.

It is an arithmetic number, because the mean of its divisors is an integer number (9796080).

Almost surely, 2^68572518 is an apocalyptic number.

68572518 is an abundant number, since it is smaller than the sum of its proper divisors (88164762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68572518 is a wasteful number, since it uses less digits than its factorization.

68572518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632691.

The product of its digits is 134400, while the sum is 42.

The square root of 68572518 is about 8280.8524923464. The cubic root of 68572518 is about 409.3078108405.

The spelling of 68572518 in words is "sixty-eight million, five hundred seventy-two thousand, five hundred eighteen".