64787470 has 16 divisors (see below), whose sum is σ = 127219248. Its totient is φ = 23559040.

The previous prime is 64787467. The next prime is 64787477. The reversal of 64787470 is 7478746.

64787470 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64787477) by changing a digit.

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, 294379 + ... + 294598.

It is an arithmetic number, because the mean of its divisors is an integer number (7951203).

Almost surely, 2^64787470 is an apocalyptic number.

64787470 is a deficient number, since it is larger than the sum of its proper divisors (62431778).

64787470 is a wasteful number, since it uses less digits than its factorization.

64787470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588995.

The product of its (nonzero) digits is 263424, while the sum is 43.

The square root of 64787470 is about 8049.0664054908. The cubic root of 64787470 is about 401.6338795074.

The spelling of 64787470 in words is "sixty-four million, seven hundred eighty-seven thousand, four hundred seventy".