67138620 has 48 divisors (see below), whose sum is σ = 188966400. Its totient is φ = 17810496.

The previous prime is 67138619. The next prime is 67138697. The reversal of 67138620 is 2683176.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9129 + ... + 14751.

It is an arithmetic number, because the mean of its divisors is an integer number (3936800).

Almost surely, 2^67138620 is an apocalyptic number.

67138620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67138620 is an abundant number, since it is smaller than the sum of its proper divisors (121827780).

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

67138620 is a wasteful number, since it uses less digits than its factorization.

67138620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5834 (or 5832 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 67138620 is about 8193.8159608329. The cubic root of 67138620 is about 406.4347224631.

The spelling of 67138620 in words is "sixty-seven million, one hundred thirty-eight thousand, six hundred twenty".