67940140 has 24 divisors (see below), whose sum is σ = 146531952. Its totient is φ = 26441280.

The previous prime is 67940123. The next prime is 67940149. The reversal of 67940140 is 4104976.

It is not an unprimeable number, because it can be changed into a prime (67940149) 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, 45166 + ... + 46645.

It is an arithmetic number, because the mean of its divisors is an integer number (6105498).

Almost surely, 2^67940140 is an apocalyptic number.

It is an amenable number.

67940140 is an abundant number, since it is smaller than the sum of its proper divisors (78591812).

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

67940140 is a wasteful number, since it uses less digits than its factorization.

67940140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91857 (or 91855 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 67940140 is about 8242.5809064880. The cubic root of 67940140 is about 408.0457064648.

The spelling of 67940140 in words is "sixty-seven million, nine hundred forty thousand, one hundred forty".