67923985 has 4 divisors (see below), whose sum is σ = 81508788. Its totient is φ = 54339184.

The previous prime is 67923979. The next prime is 67924013. The reversal of 67923985 is 58932976.

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

It can be written as a sum of positive squares in 2 ways, for example, as 43441281 + 24482704 = 6591^2 + 4948^2 .

It is a cyclic number.

It is not a de Polignac number, because 67923985 - 2⁵ = 67923953 is a prime.

It is a super-2 number, since 2×67923985² = 9227335476560450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6792394 + ... + 6792403.

It is an arithmetic number, because the mean of its divisors is an integer number (20377197).

Almost surely, 2^67923985 is an apocalyptic number.

It is an amenable number.

67923985 is a deficient number, since it is larger than the sum of its proper divisors (13584803).

67923985 is a wasteful number, since it uses less digits than its factorization.

67923985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13584802.

The product of its digits is 816480, while the sum is 49.

The square root of 67923985 is about 8241.6008760434. The cubic root of 67923985 is about 408.0133618109.

The spelling of 67923985 in words is "sixty-seven million, nine hundred twenty-three thousand, nine hundred eighty-five".