1099647672 has 32 divisors (see below), whose sum is σ = 2754550800. Its totient is φ = 365825024.

The previous prime is 1099647649. The next prime is 1099647683. The reversal of 1099647672 is 2767469901.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 32793 + ... + 57224.

Almost surely, 2^1099647672 is an apocalyptic number.

1099647672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1099647672 is an abundant number, since it is smaller than the sum of its proper divisors (1654903128).

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

1099647672 is a wasteful number, since it uses less digits than its factorization.

1099647672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90535 (or 90531 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 51.

The square root of 1099647672 is about 33160.9359337157. The cubic root of 1099647672 is about 1032.1698912060.

The spelling of 1099647672 in words is "one billion, ninety-nine million, six hundred forty-seven thousand, six hundred seventy-two".