64309450 has 12 divisors (see below), whose sum is σ = 119615670. Its totient is φ = 25723760.

The previous prime is 64309447. The next prime is 64309451. The reversal of 64309450 is 5490346.

64309450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 62110161 + 2199289 = 7881^2 + 1483^2 .

It is not an unprimeable number, because it can be changed into a prime (64309451) 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 5 ways as a sum of consecutive naturals, for example, 643045 + ... + 643144.

Almost surely, 2^64309450 is an apocalyptic number.

64309450 is a deficient number, since it is larger than the sum of its proper divisors (55306220).

64309450 is a wasteful number, since it uses less digits than its factorization.

64309450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286201 (or 1286196 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 64309450 is about 8019.3173026137. The cubic root of 64309450 is about 400.6436512272.

Adding to 64309450 its reverse (5490346), we get a palindrome (69799796).

The spelling of 64309450 in words is "sixty-four million, three hundred nine thousand, four hundred fifty".