68994973 has 8 divisors (see below), whose sum is σ = 73304280. Its totient is φ = 64814400.

The previous prime is 68994967. The next prime is 68994977. The reversal of 68994973 is 37949986.

It can be written as a sum of positive squares in 4 ways, for example, as 19123129 + 49871844 = 4373^2 + 7062^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68994973 - 2⁹ = 68994461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68994977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31078 + ... + 33223.

It is an arithmetic number, because the mean of its divisors is an integer number (9163035).

Almost surely, 2^68994973 is an apocalyptic number.

It is an amenable number.

68994973 is a deficient number, since it is larger than the sum of its proper divisors (4309307).

68994973 is a wasteful number, since it uses less digits than its factorization.

68994973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64367.

The product of its digits is 2939328, while the sum is 55.

The square root of 68994973 is about 8306.3212675648. The cubic root of 68994973 is about 410.1466320656.

The spelling of 68994973 in words is "sixty-eight million, nine hundred ninety-four thousand, nine hundred seventy-three".