64006450 has 12 divisors (see below), whose sum is σ = 119052090. Its totient is φ = 25602560.

The previous prime is 64006441. The next prime is 64006483. The reversal of 64006450 is 5460046.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 60668521 + 3337929 = 7789^2 + 1827^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 640015 + ... + 640114.

Almost surely, 2^64006450 is an apocalyptic number.

64006450 is a deficient number, since it is larger than the sum of its proper divisors (55045640).

64006450 is a wasteful number, since it uses less digits than its factorization.

64006450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280141 (or 1280136 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 64006450 is about 8000.4031148437. The cubic root of 64006450 is about 400.0134370486.

Adding to 64006450 its reverse (5460046), we get a palindrome (69466496).

The spelling of 64006450 in words is "sixty-four million, six thousand, four hundred fifty".