221483967 has 8 divisors (see below), whose sum is σ = 298021680. Its totient is φ = 146301120.

The previous prime is 221483963. The next prime is 221483987. The reversal of 221483967 is 769384122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221483967 - 2² = 221483963 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221483963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338334 + ... + 338987.

It is an arithmetic number, because the mean of its divisors is an integer number (37252710).

Almost surely, 2^221483967 is an apocalyptic number.

221483967 is a deficient number, since it is larger than the sum of its proper divisors (76537713).

221483967 is a wasteful number, since it uses less digits than its factorization.

221483967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677433.

The product of its digits is 145152, while the sum is 42.

The square root of 221483967 is about 14882.3374172205. The cubic root of 221483967 is about 605.0353707436.

The spelling of 221483967 in words is "two hundred twenty-one million, four hundred eighty-three thousand, nine hundred sixty-seven".