67609723 has 4 divisors (see below), whose sum is σ = 67749040. Its totient is φ = 67470408.

The previous prime is 67609687. The next prime is 67609741. The reversal of 67609723 is 32790676.

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 67609723 - 2⁹ = 67609211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67609823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68928 + ... + 69901.

It is an arithmetic number, because the mean of its divisors is an integer number (16937260).

Almost surely, 2^67609723 is an apocalyptic number.

67609723 is a deficient number, since it is larger than the sum of its proper divisors (139317).

67609723 is a wasteful number, since it uses less digits than its factorization.

67609723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139316.

The product of its (nonzero) digits is 95256, while the sum is 40.

The square root of 67609723 is about 8222.5131802874. The cubic root of 67609723 is about 407.3831408676.

The spelling of 67609723 in words is "sixty-seven million, six hundred nine thousand, seven hundred twenty-three".