1665877248 has 108 divisors (see below), whose sum is σ = 5489350048. Its totient is φ = 475960320.

The previous prime is 1665877223. The next prime is 1665877249. The reversal of 1665877248 is 8427785661.

1665877248 is a `hidden beast` number, since 16 + 6 + 587 + 7 + 2 + 48 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1665877194 and 1665877203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1665877249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35518 + ... + 67773.

Almost surely, 2^1665877248 is an apocalyptic number.

1665877248 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1665877248 is an abundant number, since it is smaller than the sum of its proper divisors (3823472800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1665877248 is a wasteful number, since it uses less digits than its factorization.

1665877248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103320 (or 103303 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 54.

The square root of 1665877248 is about 40815.1595366232. The cubic root of 1665877248 is about 1185.4438800697.

The spelling of 1665877248 in words is "one billion, six hundred sixty-five million, eight hundred seventy-seven thousand, two hundred forty-eight".