67949823 has 4 divisors (see below), whose sum is σ = 90599768. Its totient is φ = 45299880.

The previous prime is 67949803. The next prime is 67949839. The reversal of 67949823 is 32894976.

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

It is not a de Polignac number, because 67949823 - 2⁶ = 67949759 is a prime.

It is a super-3 number, since 3×67949823³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67949803) 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, 11324968 + ... + 11324973.

It is an arithmetic number, because the mean of its divisors is an integer number (22649942).

Almost surely, 2^67949823 is an apocalyptic number.

67949823 is a deficient number, since it is larger than the sum of its proper divisors (22649945).

67949823 is a wasteful number, since it uses less digits than its factorization.

67949823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22649944.

The product of its digits is 653184, while the sum is 48.

The square root of 67949823 is about 8243.1682622642. The cubic root of 67949823 is about 408.0650907781.

The spelling of 67949823 in words is "sixty-seven million, nine hundred forty-nine thousand, eight hundred twenty-three".