64403452 has 12 divisors (see below), whose sum is σ = 112848120. Its totient is φ = 32161136.

The previous prime is 64403401. The next prime is 64403453. The reversal of 64403452 is 25430446.

It is a self number, because there is not a number n which added to its sum of digits gives 64403452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64403453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6427 + ... + 13042.

It is an arithmetic number, because the mean of its divisors is an integer number (9404010).

Almost surely, 2^64403452 is an apocalyptic number.

It is an amenable number.

64403452 is a deficient number, since it is larger than the sum of its proper divisors (48444668).

64403452 is a wasteful number, since it uses less digits than its factorization.

64403452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20300 (or 20298 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 64403452 is about 8025.1761351387. The cubic root of 64403452 is about 400.8387649540.

Adding to 64403452 its reverse (25430446), we get a palindrome (89833898).

The spelling of 64403452 in words is "sixty-four million, four hundred three thousand, four hundred fifty-two".