1663715344 has 10 divisors (see below), whose sum is σ = 3223448510. Its totient is φ = 831857664.

The previous prime is 1663715311. The next prime is 1663715357. The reversal of 1663715344 is 4435173661.

It can be written as a sum of positive squares in only one way, i.e., 1656490000 + 7225344 = 40700^2 + 2688^2 .

It is a super-2 number, since 2×1663715344² = 5535897491722076672, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1663715297 and 1663715306.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51991089 + ... + 51991120.

It is an arithmetic number, because the mean of its divisors is an integer number (322344851).

Almost surely, 2^1663715344 is an apocalyptic number.

It is an amenable number.

1663715344 is a deficient number, since it is larger than the sum of its proper divisors (1559733166).

1663715344 is a wasteful number, since it uses less digits than its factorization.

1663715344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103982217 (or 103982211 counting only the distinct ones).

The product of its digits is 181440, while the sum is 40.

The square root of 1663715344 is about 40788.6668573514. Note that the first 3 decimals coincide. The cubic root of 1663715344 is about 1184.9308520126.

The spelling of 1663715344 in words is "one billion, six hundred sixty-three million, seven hundred fifteen thousand, three hundred forty-four".