68921952 has 48 divisors (see below), whose sum is σ = 197370432. Its totient is φ = 20885120.

The previous prime is 68921947. The next prime is 68921969. The reversal of 68921952 is 25912986.

It is a tau number, because it is divible by the number of its divisors (48).

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 in 7 ways as a sum of consecutive naturals, for example, 31578 + ... + 33689.

It is an arithmetic number, because the mean of its divisors is an integer number (4111884).

Almost surely, 2^68921952 is an apocalyptic number.

It is an amenable number.

68921952 is an abundant number, since it is smaller than the sum of its proper divisors (128448480).

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

68921952 is a wasteful number, since it uses less digits than its factorization.

68921952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65291 (or 65283 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 68921952 is about 8301.9245961403. The cubic root of 68921952 is about 410.0018877565.

The spelling of 68921952 in words is "sixty-eight million, nine hundred twenty-one thousand, nine hundred fifty-two".