664916284 has 6 divisors (see below), whose sum is σ = 1163603504. Its totient is φ = 332458140.

The previous prime is 664916281. The next prime is 664916341. The reversal of 664916284 is 482619466.

664916284 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 2×664916284² = 884227329456737312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664916281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83114532 + ... + 83114539.

Almost surely, 2^664916284 is an apocalyptic number.

It is an amenable number.

664916284 is a deficient number, since it is larger than the sum of its proper divisors (498687220).

664916284 is a wasteful number, since it uses less digits than its factorization.

664916284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166229075 (or 166229073 counting only the distinct ones).

The product of its digits is 497664, while the sum is 46.

The square root of 664916284 is about 25785.9706817486. The cubic root of 664916284 is about 872.8152445793.

The spelling of 664916284 in words is "six hundred sixty-four million, nine hundred sixteen thousand, two hundred eighty-four".