64676420 has 24 divisors (see below), whose sum is σ = 136539648. Its totient is φ = 25733600.

The previous prime is 64676411. The next prime is 64676473. The reversal of 64676420 is 2467646.

It is a happy number.

64676420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 4646 + ... + 12285.

It is an arithmetic number, because the mean of its divisors is an integer number (5689152).

Almost surely, 2^64676420 is an apocalyptic number.

It is an amenable number.

64676420 is an abundant number, since it is smaller than the sum of its proper divisors (71863228).

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

64676420 is a wasteful number, since it uses less digits than its factorization.

64676420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17131 (or 17129 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 64676420 is about 8042.1651313561. The cubic root of 64676420 is about 401.4042726103.

The spelling of 64676420 in words is "sixty-four million, six hundred seventy-six thousand, four hundred twenty".