67920940 has 12 divisors (see below), whose sum is σ = 142634016. Its totient is φ = 27168368.

The previous prime is 67920913. The next prime is 67920949. The reversal of 67920940 is 4902976.

It is a super-2 number, since 2×67920940² = 9226508180967200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 67920940.

It is not an unprimeable number, because it can be changed into a prime (67920949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1698004 + ... + 1698043.

It is an arithmetic number, because the mean of its divisors is an integer number (11886168).

Almost surely, 2^67920940 is an apocalyptic number.

It is an amenable number.

67920940 is an abundant number, since it is smaller than the sum of its proper divisors (74713076).

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

67920940 is a wasteful number, since it uses less digits than its factorization.

67920940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3396056 (or 3396054 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 67920940 is about 8241.4161404458. The cubic root of 67920940 is about 408.0072647047.

The spelling of 67920940 in words is "sixty-seven million, nine hundred twenty thousand, nine hundred forty".