68649969 has 8 divisors (see below), whose sum is σ = 91998720. Its totient is φ = 45533936.

The previous prime is 68649967. The next prime is 68650019. The reversal of 68649969 is 96994686.

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 68649969 - 2¹ = 68649967 is a prime.

It is a super-2 number, since 2×68649969² = 9425636487401922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68649967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57489 + ... + 58670.

It is an arithmetic number, because the mean of its divisors is an integer number (11499840).

Almost surely, 2^68649969 is an apocalyptic number.

It is an amenable number.

68649969 is a deficient number, since it is larger than the sum of its proper divisors (23348751).

68649969 is a wasteful number, since it uses less digits than its factorization.

68649969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116359.

The product of its digits is 5038848, while the sum is 57.

The square root of 68649969 is about 8285.5276838594. The cubic root of 68649969 is about 409.4618539489.

The spelling of 68649969 in words is "sixty-eight million, six hundred forty-nine thousand, nine hundred sixty-nine".