221770674 has 24 divisors (see below), whose sum is σ = 493491180. Its totient is φ = 71925408.

The previous prime is 221770667. The next prime is 221770687. The reversal of 221770674 is 476077122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 196700625 + 25070049 = 14025^2 + 5007^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 165829 + ... + 167160.

Almost surely, 2^221770674 is an apocalyptic number.

221770674 is an abundant number, since it is smaller than the sum of its proper divisors (271720506).

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

221770674 is a wasteful number, since it uses less digits than its factorization.

221770674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333034 (or 333031 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 221770674 is about 14891.9667606398. The cubic root of 221770674 is about 605.2963272992.

The spelling of 221770674 in words is "two hundred twenty-one million, seven hundred seventy thousand, six hundred seventy-four".