64644062 has 8 divisors (see below), whose sum is σ = 110818416. Its totient is φ = 27704592.

The previous prime is 64644059. The next prime is 64644071. The reversal of 64644062 is 26044646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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, 2308703 + ... + 2308730.

It is an arithmetic number, because the mean of its divisors is an integer number (13852302).

Almost surely, 2^64644062 is an apocalyptic number.

64644062 is a deficient number, since it is larger than the sum of its proper divisors (46174354).

64644062 is a wasteful number, since it uses less digits than its factorization.

64644062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4617442.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 64644062 is about 8040.1531079949. The cubic root of 64644062 is about 401.3373197901.

The spelling of 64644062 in words is "sixty-four million, six hundred forty-four thousand, sixty-two".