68669953 has 8 divisors (see below), whose sum is σ = 79319520. Its totient is φ = 58754880.

The previous prime is 68669947. The next prime is 68669963. The reversal of 68669953 is 35996686.

It is a happy number.

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 68669953 - 2⁵ = 68669921 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68669953.

It is not an unprimeable number, because it can be changed into a prime (68669963) 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, 183423 + ... + 183796.

It is an arithmetic number, because the mean of its divisors is an integer number (9914940).

Almost surely, 2^68669953 is an apocalyptic number.

It is an amenable number.

68669953 is a deficient number, since it is larger than the sum of its proper divisors (10649567).

68669953 is a wasteful number, since it uses less digits than its factorization.

68669953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367247.

The product of its digits is 2099520, while the sum is 52.

The square root of 68669953 is about 8286.7335543023. The cubic root of 68669953 is about 409.5015815309.

The spelling of 68669953 in words is "sixty-eight million, six hundred sixty-nine thousand, nine hundred fifty-three".