53784664 has 16 divisors (see below), whose sum is σ = 102062520. Its totient is φ = 26568000.

The previous prime is 53784623. The next prime is 53784671. The reversal of 53784664 is 46648735.

It is a self number, because there is not a number n which added to its sum of digits gives 53784664.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39837 + ... + 41164.

Almost surely, 2^53784664 is an apocalyptic number.

It is an amenable number.

53784664 is a deficient number, since it is larger than the sum of its proper divisors (48277856).

53784664 is a wasteful number, since it uses less digits than its factorization.

53784664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81090 (or 81086 counting only the distinct ones).

The product of its digits is 483840, while the sum is 43.

The square root of 53784664 is about 7333.8028334555. The cubic root of 53784664 is about 377.4732264684.

It can be divided in two parts, 53784 and 664, that multiplied together give a square (35712576 = 5976²).

The spelling of 53784664 in words is "fifty-three million, seven hundred eighty-four thousand, six hundred sixty-four".