67138490 has 16 divisors (see below), whose sum is σ = 122024448. Its totient is φ = 26594256.

The previous prime is 67138481. The next prime is 67138493. The reversal of 67138490 is 9483176.

It is not an unprimeable number, because it can be changed into a prime (67138493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31562 + ... + 33621.

It is an arithmetic number, because the mean of its divisors is an integer number (7626528).

Almost surely, 2^67138490 is an apocalyptic number.

67138490 is a deficient number, since it is larger than the sum of its proper divisors (54885958).

67138490 is a wasteful number, since it uses less digits than its factorization.

67138490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65293.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 67138490 is about 8193.8080280173. The cubic root of 67138490 is about 406.4344601375.

The spelling of 67138490 in words is "sixty-seven million, one hundred thirty-eight thousand, four hundred ninety".