67138698 has 32 divisors (see below), whose sum is σ = 146992320. Its totient is φ = 20274560.

The previous prime is 67138697. The next prime is 67138699. The reversal of 67138698 is 89683176.

It is an interprime number because it is at equal distance from previous prime (67138697) and next prime (67138699).

It is not an unprimeable number, because it can be changed into a prime (67138697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19318 + ... + 22526.

It is an arithmetic number, because the mean of its divisors is an integer number (4593510).

Almost surely, 2^67138698 is an apocalyptic number.

67138698 is an abundant number, since it is smaller than the sum of its proper divisors (79853622).

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

67138698 is a wasteful number, since it uses less digits than its factorization.

67138698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3542.

The product of its digits is 435456, while the sum is 48.

The square root of 67138698 is about 8193.8207205186. The cubic root of 67138698 is about 406.4348798584.

The spelling of 67138698 in words is "sixty-seven million, one hundred thirty-eight thousand, six hundred ninety-eight".