221675672 has 8 divisors (see below), whose sum is σ = 415641900. Its totient is φ = 110837832.

The previous prime is 221675651. The next prime is 221675683. The reversal of 221675672 is 276576122.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 13854722 + ... + 13854737.

Almost surely, 2^221675672 is an apocalyptic number.

It is an amenable number.

221675672 is a deficient number, since it is larger than the sum of its proper divisors (193966228).

221675672 is a wasteful number, since it uses less digits than its factorization.

221675672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27709465 (or 27709461 counting only the distinct ones).

The product of its digits is 70560, while the sum is 38.

The square root of 221675672 is about 14888.7767126786. The cubic root of 221675672 is about 605.2098827845.

The spelling of 221675672 in words is "two hundred twenty-one million, six hundred seventy-five thousand, six hundred seventy-two".