67994965 has 4 divisors (see below), whose sum is σ = 81593964. Its totient is φ = 54395968.

The previous prime is 67994957. The next prime is 67994981. The reversal of 67994965 is 56949976.

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 21659716 + 46335249 = 4654^2 + 6807^2 .

It is a cyclic number.

It is not a de Polignac number, because 67994965 - 2³ = 67994957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 6799492 + ... + 6799501.

It is an arithmetic number, because the mean of its divisors is an integer number (20398491).

Almost surely, 2^67994965 is an apocalyptic number.

It is an amenable number.

67994965 is a deficient number, since it is larger than the sum of its proper divisors (13598999).

67994965 is a wasteful number, since it uses less digits than its factorization.

67994965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13598998.

The product of its digits is 3674160, while the sum is 55.

The square root of 67994965 is about 8245.9059538658. The cubic root of 67994965 is about 408.1554358581.

The spelling of 67994965 in words is "sixty-seven million, nine hundred ninety-four thousand, nine hundred sixty-five".