68401218 has 32 divisors (see below), whose sum is σ = 146082816. Its totient is φ = 21300048.

The previous prime is 68401211. The next prime is 68401247. The reversal of 68401218 is 81210486.

It is not an unprimeable number, because it can be changed into a prime (68401211) 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, 171 + ... + 11697.

It is an arithmetic number, because the mean of its divisors is an integer number (4565088).

Almost surely, 2^68401218 is an apocalyptic number.

68401218 is an abundant number, since it is smaller than the sum of its proper divisors (77681598).

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

68401218 is a wasteful number, since it uses less digits than its factorization.

68401218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11598.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 68401218 is about 8270.5028867657. The cubic root of 68401218 is about 408.9666980296.

The spelling of 68401218 in words is "sixty-eight million, four hundred one thousand, two hundred eighteen".