67439023 has 4 divisors (see below), whose sum is σ = 67615488. Its totient is φ = 67262560.

The previous prime is 67438951. The next prime is 67439027. The reversal of 67439023 is 32093476.

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 67439023 - 2¹⁷ = 67307951 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67439023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67439027) 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 3 ways as a sum of consecutive naturals, for example, 87658 + ... + 88423.

It is an arithmetic number, because the mean of its divisors is an integer number (16903872).

Almost surely, 2^67439023 is an apocalyptic number.

67439023 is a deficient number, since it is larger than the sum of its proper divisors (176465).

67439023 is a wasteful number, since it uses less digits than its factorization.

67439023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176464.

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 67439023 is about 8212.1265820736. The cubic root of 67439023 is about 407.0400003346.

The spelling of 67439023 in words is "sixty-seven million, four hundred thirty-nine thousand, twenty-three".