68964240 has 80 divisors (see below), whose sum is σ = 226378368. Its totient is φ = 17307648.

The previous prime is 68964211. The next prime is 68964241. The reversal of 68964240 is 4246986.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (68964241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4372 + ... + 12531.

Almost surely, 2^68964240 is an apocalyptic number.

68964240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68964240 is an abundant number, since it is smaller than the sum of its proper divisors (157414128).

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

68964240 is a wasteful number, since it uses less digits than its factorization.

68964240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16936 (or 16930 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 68964240 is about 8304.4710849036. The cubic root of 68964240 is about 410.0857246886.

The spelling of 68964240 in words is "sixty-eight million, nine hundred sixty-four thousand, two hundred forty".