1663874624 has 14 divisors (see below), whose sum is σ = 3301751334. Its totient is φ = 831937280.

The previous prime is 1663874591. The next prime is 1663874627. The reversal of 1663874624 is 4264783661.

It can be written as a sum of positive squares in only one way, i.e., 1293697024 + 370177600 = 35968^2 + 19240^2 .

It is a super-2 number, since 2×1663874624² = 5536957528782282752, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1663874627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12998957 + ... + 12999084.

It is an arithmetic number, because the mean of its divisors is an integer number (235839381).

Almost surely, 2^1663874624 is an apocalyptic number.

It is an amenable number.

1663874624 is a deficient number, since it is larger than the sum of its proper divisors (1637876710).

1663874624 is an equidigital number, since it uses as much as digits as its factorization.

1663874624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25998053 (or 25998043 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 47.

The square root of 1663874624 is about 40790.6193137589. The cubic root of 1663874624 is about 1184.9686649242.

The spelling of 1663874624 in words is "one billion, six hundred sixty-three million, eight hundred seventy-four thousand, six hundred twenty-four".