64400327 has 4 divisors (see below), whose sum is σ = 65038056. Its totient is φ = 63762600.

The previous prime is 64400321. The next prime is 64400341. The reversal of 64400327 is 72300446.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64400327 - 2⁶ = 64400263 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64400296 and 64400305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64400321) 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 3 ways as a sum of consecutive naturals, for example, 318713 + ... + 318914.

It is an arithmetic number, because the mean of its divisors is an integer number (16259514).

Almost surely, 2^64400327 is an apocalyptic number.

64400327 is a deficient number, since it is larger than the sum of its proper divisors (637729).

64400327 is a wasteful number, since it uses less digits than its factorization.

64400327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637728.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 64400327 is about 8024.9814330003. The cubic root of 64400327 is about 400.8322816504.

The spelling of 64400327 in words is "sixty-four million, four hundred thousand, three hundred twenty-seven".