68364040 has 32 divisors (see below), whose sum is σ = 154224000. Its totient is φ = 27273664.

The previous prime is 68364019. The next prime is 68364041. The reversal of 68364040 is 4046386.

It is a junction number, because it is equal to n+sod(n) for n = 68363993 and 68364011.

It is not an unprimeable number, because it can be changed into a prime (68364041) 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, 14721 + ... + 18799.

It is an arithmetic number, because the mean of its divisors is an integer number (4819500).

Almost surely, 2^68364040 is an apocalyptic number.

It is an amenable number.

68364040 is an abundant number, since it is smaller than the sum of its proper divisors (85859960).

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

68364040 is a wasteful number, since it uses less digits than its factorization.

68364040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4509 (or 4505 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 68364040 is about 8268.2549549467. The cubic root of 68364040 is about 408.8925896054.

The spelling of 68364040 in words is "sixty-eight million, three hundred sixty-four thousand, forty".