220917974 has 4 divisors (see below), whose sum is σ = 331376964. Its totient is φ = 110458986.

The previous prime is 220917953. The next prime is 220918003. The reversal of 220917974 is 479719022.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55229492 + ... + 55229495.

It is an arithmetic number, because the mean of its divisors is an integer number (82844241).

Almost surely, 2^220917974 is an apocalyptic number.

220917974 is a deficient number, since it is larger than the sum of its proper divisors (110458990).

220917974 is a wasteful number, since it uses less digits than its factorization.

220917974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110458989.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 220917974 is about 14863.3096583500. The cubic root of 220917974 is about 604.5195502592.

The spelling of 220917974 in words is "two hundred twenty million, nine hundred seventeen thousand, nine hundred seventy-four".