68921673 has 8 divisors (see below), whose sum is σ = 92331936. Its totient is φ = 45729600.

The previous prime is 68921669. The next prime is 68921687. The reversal of 68921673 is 37612986.

It is a happy number.

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

It is not a de Polignac number, because 68921673 - 2² = 68921669 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68921653) 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, 53808 + ... + 55073.

It is an arithmetic number, because the mean of its divisors is an integer number (11541492).

Almost surely, 2^68921673 is an apocalyptic number.

It is an amenable number.

68921673 is a deficient number, since it is larger than the sum of its proper divisors (23410263).

68921673 is a wasteful number, since it uses less digits than its factorization.

68921673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109095.

The product of its digits is 108864, while the sum is 42.

The square root of 68921673 is about 8301.9077927908. The cubic root of 68921673 is about 410.0013345188.

The spelling of 68921673 in words is "sixty-eight million, nine hundred twenty-one thousand, six hundred seventy-three".