67940920 has 32 divisors (see below), whose sum is σ = 153148320. Its totient is φ = 27126400.

The previous prime is 67940893. The next prime is 67940921. The reversal of 67940920 is 2904976.

It is a super-2 number, since 2×67940920² = 9231937220892800, 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 67940920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67940921) 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, 26829 + ... + 29251.

It is an arithmetic number, because the mean of its divisors is an integer number (4785885).

Almost surely, 2^67940920 is an apocalyptic number.

It is an amenable number.

67940920 is an abundant number, since it is smaller than the sum of its proper divisors (85207400).

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

67940920 is a wasteful number, since it uses less digits than its factorization.

67940920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3135 (or 3131 counting only the distinct ones).

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

The square root of 67940920 is about 8242.6282216293. The cubic root of 67940920 is about 408.0472680082.

The spelling of 67940920 in words is "sixty-seven million, nine hundred forty thousand, nine hundred twenty".