68144372 has 6 divisors (see below), whose sum is σ = 119252658. Its totient is φ = 34072184.

The previous prime is 68144371. The next prime is 68144387. The reversal of 68144372 is 27344186.

It can be written as a sum of positive squares in only one way, i.e., 62789776 + 5354596 = 7924^2 + 2314^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68144371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8518043 + ... + 8518050.

It is an arithmetic number, because the mean of its divisors is an integer number (19875443).

Almost surely, 2^68144372 is an apocalyptic number.

It is an amenable number.

68144372 is a deficient number, since it is larger than the sum of its proper divisors (51108286).

68144372 is a wasteful number, since it uses less digits than its factorization.

68144372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17036097 (or 17036095 counting only the distinct ones).

The product of its digits is 32256, while the sum is 35.

The square root of 68144372 is about 8254.9604481185. The cubic root of 68144372 is about 408.4541671363.

The spelling of 68144372 in words is "sixty-eight million, one hundred forty-four thousand, three hundred seventy-two".