68189051 has 4 divisors (see below), whose sum is σ = 77930352. Its totient is φ = 58447752.

The previous prime is 68189047. The next prime is 68189053. The reversal of 68189051 is 15098186.

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

It is a cyclic number.

It is not a de Polignac number, because 68189051 - 2² = 68189047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68188996 and 68189014.

It is not an unprimeable number, because it can be changed into a prime (68189053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4870640 + ... + 4870653.

It is an arithmetic number, because the mean of its divisors is an integer number (19482588).

Almost surely, 2^68189051 is an apocalyptic number.

68189051 is a deficient number, since it is larger than the sum of its proper divisors (9741301).

68189051 is an equidigital number, since it uses as much as digits as its factorization.

68189051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9741300.

The product of its (nonzero) digits is 17280, while the sum is 38.

The square root of 68189051 is about 8257.6661957238. Note that the first 3 decimals coincide. The cubic root of 68189051 is about 408.5434155768.

The spelling of 68189051 in words is "sixty-eight million, one hundred eighty-nine thousand, fifty-one".