67213660 has 12 divisors (see below), whose sum is σ = 141148728. Its totient is φ = 26885456.

The previous prime is 67213609. The next prime is 67213669. The reversal of 67213660 is 6631276.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67213669) 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, 1680322 + ... + 1680361.

It is an arithmetic number, because the mean of its divisors is an integer number (11762394).

Almost surely, 2^67213660 is an apocalyptic number.

It is an amenable number.

67213660 is an abundant number, since it is smaller than the sum of its proper divisors (73935068).

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

67213660 is a wasteful number, since it uses less digits than its factorization.

67213660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3360692 (or 3360690 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 67213660 is about 8198.3937451186. The cubic root of 67213660 is about 406.5860884275.

The spelling of 67213660 in words is "sixty-seven million, two hundred thirteen thousand, six hundred sixty".