64550332 has 24 divisors (see below), whose sum is σ = 140837760. Its totient is φ = 25149360.

The previous prime is 64550329. The next prime is 64550333. The reversal of 64550332 is 23305546.

It is a super-2 number, since 2×64550332² = 8333490722620448, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 64550332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64550333) 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 7 ways as a sum of consecutive naturals, for example, 104482 + ... + 105097.

It is an arithmetic number, because the mean of its divisors is an integer number (5868240).

Almost surely, 2^64550332 is an apocalyptic number.

It is an amenable number.

64550332 is an abundant number, since it is smaller than the sum of its proper divisors (76287428).

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

64550332 is a wasteful number, since it uses less digits than its factorization.

64550332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209601 (or 209599 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 64550332 is about 8034.3221244857. The cubic root of 64550332 is about 401.1432543109.

Adding to 64550332 its reverse (23305546), we get a palindrome (87855878).

The spelling of 64550332 in words is "sixty-four million, five hundred fifty thousand, three hundred thirty-two".