64584040 has 32 divisors (see below), whose sum is σ = 152964000. Its totient is φ = 24473664.

The previous prime is 64584031. The next prime is 64584041. The reversal of 64584040 is 4048546.

It is a junction number, because it is equal to n+sod(n) for n = 64583993 and 64584011.

It is not an unprimeable number, because it can be changed into a prime (64584041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41730 + ... + 43249.

It is an arithmetic number, because the mean of its divisors is an integer number (4780125).

Almost surely, 2^64584040 is an apocalyptic number.

It is an amenable number.

64584040 is an abundant number, since it is smaller than the sum of its proper divisors (88379960).

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

64584040 is a wasteful number, since it uses less digits than its factorization.

64584040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85009 (or 85005 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 64584040 is about 8036.4196007924. The cubic root of 64584040 is about 401.2130674495.

The spelling of 64584040 in words is "sixty-four million, five hundred eighty-four thousand, forty".