68163040 has 48 divisors (see below), whose sum is σ = 175679280. Its totient is φ = 24785920.

The previous prime is 68163037. The next prime is 68163049. The reversal of 68163040 is 4036186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68163049) 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, 17605 + ... + 21124.

It is an arithmetic number, because the mean of its divisors is an integer number (3659985).

Almost surely, 2^68163040 is an apocalyptic number.

It is an amenable number.

68163040 is an abundant number, since it is smaller than the sum of its proper divisors (107516240).

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

68163040 is a wasteful number, since it uses less digits than its factorization.

68163040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38755 (or 38747 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 68163040 is about 8256.0910847689. The cubic root of 68163040 is about 408.4914621028.

The spelling of 68163040 in words is "sixty-eight million, one hundred sixty-three thousand, forty".