68901968 has 10 divisors (see below), whose sum is σ = 133497594. Its totient is φ = 34450976.

The previous prime is 68901949. The next prime is 68901971. The reversal of 68901968 is 86910986.

It can be written as a sum of positive squares in only one way, i.e., 40043584 + 28858384 = 6328^2 + 5372^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2153171 + ... + 2153202.

Almost surely, 2^68901968 is an apocalyptic number.

It is an amenable number.

68901968 is a deficient number, since it is larger than the sum of its proper divisors (64595626).

68901968 is a wasteful number, since it uses less digits than its factorization.

68901968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4306381 (or 4306375 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 68901968 is about 8300.7209325456. The cubic root of 68901968 is about 409.9622570848.

The spelling of 68901968 in words is "sixty-eight million, nine hundred one thousand, nine hundred sixty-eight".