67800139 has 4 divisors (see below), whose sum is σ = 73963800. Its totient is φ = 61636480.

The previous prime is 67800119. The next prime is 67800149. The reversal of 67800139 is 93100876.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 67800139 - 2⁵ = 67800107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67800119) 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, 3081814 + ... + 3081835.

It is an arithmetic number, because the mean of its divisors is an integer number (18490950).

Almost surely, 2^67800139 is an apocalyptic number.

67800139 is a deficient number, since it is larger than the sum of its proper divisors (6163661).

67800139 is a wasteful number, since it uses less digits than its factorization.

67800139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6163660.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 67800139 is about 8234.0839806259. The cubic root of 67800139 is about 407.7652336278.

The spelling of 67800139 in words is "sixty-seven million, eight hundred thousand, one hundred thirty-nine".