68490069 has 8 divisors (see below), whose sum is σ = 91609440. Its totient is φ = 45515376.

The previous prime is 68490017. The next prime is 68490073. The reversal of 68490069 is 96009486.

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

It is a de Polignac number, because none of the positive numbers 2^k-68490069 is a prime.

It is a super-2 number, since 2×68490069² = 9381779103249522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68490069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68490089) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 35059 + ... + 36960.

It is an arithmetic number, because the mean of its divisors is an integer number (11451180).

Almost surely, 2^68490069 is an apocalyptic number.

It is an amenable number.

68490069 is a deficient number, since it is larger than the sum of its proper divisors (23119371).

68490069 is a wasteful number, since it uses less digits than its factorization.

68490069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72339.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 68490069 is about 8275.8727032259. The cubic root of 68490069 is about 409.1436996431.

The spelling of 68490069 in words is "sixty-eight million, four hundred ninety thousand, sixty-nine".