68376921 has 8 divisors (see below), whose sum is σ = 91288224. Its totient is φ = 45525120.

The previous prime is 68376911. The next prime is 68376947. The reversal of 68376921 is 12967386.

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 68376921 - 2⁹ = 68376409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68376911) 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, 12120 + ... + 16841.

It is an arithmetic number, because the mean of its divisors is an integer number (11411028).

Almost surely, 2^68376921 is an apocalyptic number.

It is an amenable number.

68376921 is a deficient number, since it is larger than the sum of its proper divisors (22911303).

68376921 is a wasteful number, since it uses less digits than its factorization.

68376921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29751.

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

The square root of 68376921 is about 8269.0338613408. The cubic root of 68376921 is about 408.9182688694.

The spelling of 68376921 in words is "sixty-eight million, three hundred seventy-six thousand, nine hundred twenty-one".