64422787 has 32 divisors (see below), whose sum is σ = 80720640. Its totient is φ = 50544000.

The previous prime is 64422781. The next prime is 64422823. The reversal of 64422787 is 78722446.

64422787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64422787 - 2¹¹ = 64420739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64422781) 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 31 ways as a sum of consecutive naturals, for example, 355837 + ... + 356017.

It is an arithmetic number, because the mean of its divisors is an integer number (2522520).

Almost surely, 2^64422787 is an apocalyptic number.

64422787 is a deficient number, since it is larger than the sum of its proper divisors (16297853).

64422787 is a wasteful number, since it uses less digits than its factorization.

64422787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355.

The product of its digits is 150528, while the sum is 40.

The square root of 64422787 is about 8026.3806911958. The cubic root of 64422787 is about 400.8788737879.

It can be divided in two parts, 6442 and 2787, that added together give a palindrome (9229).

The spelling of 64422787 in words is "sixty-four million, four hundred twenty-two thousand, seven hundred eighty-seven".