64244402 has 4 divisors (see below), whose sum is σ = 96366606. Its totient is φ = 32122200.

The previous prime is 64244393. The next prime is 64244419. The reversal of 64244402 is 20444246.

64244402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 60668521 + 3575881 = 7789^2 + 1891^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 16061099 + ... + 16061102.

Almost surely, 2^64244402 is an apocalyptic number.

64244402 is a deficient number, since it is larger than the sum of its proper divisors (32122204).

64244402 is a wasteful number, since it uses less digits than its factorization.

64244402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32122203.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 64244402 is about 8015.2605696883. The cubic root of 64244402 is about 400.5085240676.

Adding to 64244402 its reverse (20444246), we get a palindrome (84688648).

It can be divided in two parts, 64244 and 402, that added together give a palindrome (64646).

The spelling of 64244402 in words is "sixty-four million, two hundred forty-four thousand, four hundred two".