1663660252 has 6 divisors (see below), whose sum is σ = 2911405448. Its totient is φ = 831830124.

The previous prime is 1663660247. The next prime is 1663660253. The reversal of 1663660252 is 2520663661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663660253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 207957528 + ... + 207957535.

Almost surely, 2^1663660252 is an apocalyptic number.

It is an amenable number.

1663660252 is a deficient number, since it is larger than the sum of its proper divisors (1247745196).

1663660252 is a wasteful number, since it uses less digits than its factorization.

1663660252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415915067 (or 415915065 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 1663660252 is about 40787.9915171120. The cubic root of 1663660252 is about 1184.9177726656.

The spelling of 1663660252 in words is "one billion, six hundred sixty-three million, six hundred sixty thousand, two hundred fifty-two".