68144680 has 32 divisors (see below), whose sum is σ = 156895200. Its totient is φ = 26623296.

The previous prime is 68144677. The next prime is 68144683. The reversal of 68144680 is 8644186.

It is an interprime number because it is at equal distance from previous prime (68144677) and next prime (68144683).

It is a super-3 number, since 3×68144680³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (68144683) 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, 18090 + ... + 21529.

It is an arithmetic number, because the mean of its divisors is an integer number (4902975).

Almost surely, 2^68144680 is an apocalyptic number.

It is an amenable number.

68144680 is an abundant number, since it is smaller than the sum of its proper divisors (88750520).

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

68144680 is a wasteful number, since it uses less digits than its factorization.

68144680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39673 (or 39669 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 68144680 is about 8254.9791035471. The cubic root of 68144680 is about 408.4547825146.

The spelling of 68144680 in words is "sixty-eight million, one hundred forty-four thousand, six hundred eighty".