60639920 has 40 divisors (see below), whose sum is σ = 153807120. Its totient is φ = 22050560.

The previous prime is 60639913. The next prime is 60639941. The reversal of 60639920 is 2993606.

60639920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

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 in 7 ways as a sum of consecutive naturals, for example, 33575 + ... + 35334.

It is an arithmetic number, because the mean of its divisors is an integer number (3845178).

Almost surely, 2^60639920 is an apocalyptic number.

It is an amenable number.

60639920 is an abundant number, since it is smaller than the sum of its proper divisors (93167200).

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

60639920 is a wasteful number, since it uses less digits than its factorization.

60639920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68933 (or 68927 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 60639920 is about 7787.1637969161. The cubic root of 60639920 is about 392.8736242436.

The spelling of 60639920 in words is "sixty million, six hundred thirty-nine thousand, nine hundred twenty".