67655140 has 24 divisors (see below), whose sum is σ = 162372672. Its totient is φ = 23196000.

The previous prime is 67655131. The next prime is 67655141. The reversal of 67655140 is 4155676.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 67655096 and 67655105.

It is not an unprimeable number, because it can be changed into a prime (67655141) 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, 241486 + ... + 241765.

It is an arithmetic number, because the mean of its divisors is an integer number (6765528).

Almost surely, 2^67655140 is an apocalyptic number.

It is an amenable number.

67655140 is an abundant number, since it is smaller than the sum of its proper divisors (94717532).

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

67655140 is a wasteful number, since it uses less digits than its factorization.

67655140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483267 (or 483265 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 67655140 is about 8225.2744635058. The cubic root of 67655140 is about 407.4743406629.

The spelling of 67655140 in words is "sixty-seven million, six hundred fifty-five thousand, one hundred forty".