68649976 has 8 divisors (see below), whose sum is σ = 128718720. Its totient is φ = 34324984.

The previous prime is 68649967. The next prime is 68650019. The reversal of 68649976 is 67994686.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4290616 + ... + 4290631.

It is an arithmetic number, because the mean of its divisors is an integer number (16089840).

Almost surely, 2^68649976 is an apocalyptic number.

It is an amenable number.

68649976 is a deficient number, since it is larger than the sum of its proper divisors (60068744).

68649976 is a wasteful number, since it uses less digits than its factorization.

68649976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8581253 (or 8581249 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 55.

The square root of 68649976 is about 8285.5281062827. The cubic root of 68649976 is about 409.4618678660.

The spelling of 68649976 in words is "sixty-eight million, six hundred forty-nine thousand, nine hundred seventy-six".