64144624 has 10 divisors (see below), whose sum is σ = 124280240. Its totient is φ = 32072304.

The previous prime is 64144583. The next prime is 64144651. The reversal of 64144624 is 42644146.

64144624 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×64144624² = 8229065576202752, which contains 22 as substring.

It is a congruent number.

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, 2004504 + ... + 2004535.

It is an arithmetic number, because the mean of its divisors is an integer number (12428024).

Almost surely, 2^64144624 is an apocalyptic number.

It is an amenable number.

64144624 is a deficient number, since it is larger than the sum of its proper divisors (60135616).

64144624 is a wasteful number, since it uses less digits than its factorization.

64144624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4009047 (or 4009041 counting only the distinct ones).

The product of its digits is 18432, while the sum is 31.

The square root of 64144624 is about 8009.0338992915. The cubic root of 64144624 is about 400.3010733303.

The spelling of 64144624 in words is "sixty-four million, one hundred forty-four thousand, six hundred twenty-four".