68516672 has 28 divisors (see below), whose sum is σ = 155387040. Its totient is φ = 29364096.

The previous prime is 68516671. The next prime is 68516677. The reversal of 68516672 is 27661586.

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68516671) 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 3 ways as a sum of consecutive naturals, for example, 76022 + ... + 76917.

Almost surely, 2^68516672 is an apocalyptic number.

It is an amenable number.

68516672 is an abundant number, since it is smaller than the sum of its proper divisors (86870368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68516672 is a wasteful number, since it uses less digits than its factorization.

68516672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152958 (or 152948 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The square root of 68516672 is about 8277.4798097005. The cubic root of 68516672 is about 409.1966661586.

The spelling of 68516672 in words is "sixty-eight million, five hundred sixteen thousand, six hundred seventy-two".