662609144 has 32 divisors (see below), whose sum is σ = 1256258640. Its totient is φ = 327628800.

The previous prime is 662609137. The next prime is 662609177. The reversal of 662609144 is 441906266.

It is a happy number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 662609098 and 662609107.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278279 + ... + 280649.

Almost surely, 2^662609144 is an apocalyptic number.

It is an amenable number.

662609144 is a deficient number, since it is larger than the sum of its proper divisors (593649496).

662609144 is a wasteful number, since it uses less digits than its factorization.

662609144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2751 (or 2747 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 662609144 is about 25741.1954656345. The cubic root of 662609144 is about 871.8045707150.

The spelling of 662609144 in words is "six hundred sixty-two million, six hundred nine thousand, one hundred forty-four".