64386546 has 32 divisors (see below), whose sum is σ = 147638400. Its totient is φ = 18337536.

The previous prime is 64386541. The next prime is 64386557. The reversal of 64386546 is 64568346.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 64386498 and 64386507.

It is not an unprimeable number, because it can be changed into a prime (64386541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11880 + ... + 16428.

It is an arithmetic number, because the mean of its divisors is an integer number (4613700).

Almost surely, 2^64386546 is an apocalyptic number.

64386546 is an abundant number, since it is smaller than the sum of its proper divisors (83251854).

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

64386546 is a wasteful number, since it uses less digits than its factorization.

64386546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4898.

The product of its digits is 414720, while the sum is 42.

The square root of 64386546 is about 8024.1227557908. The cubic root of 64386546 is about 400.8036882980.

The spelling of 64386546 in words is "sixty-four million, three hundred eighty-six thousand, five hundred forty-six".