220689693 has 24 divisors (see below), whose sum is σ = 383489600. Its totient is φ = 119470464.

The previous prime is 220689691. The next prime is 220689697. The reversal of 220689693 is 396986022.

It is not a de Polignac number, because 220689693 - 2¹ = 220689691 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220689691) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90988 + ... + 93381.

Almost surely, 2^220689693 is an apocalyptic number.

It is an amenable number.

220689693 is a deficient number, since it is larger than the sum of its proper divisors (162799907).

220689693 is a wasteful number, since it uses less digits than its factorization.

220689693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184401 (or 184398 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 220689693 is about 14855.6283273378. The cubic root of 220689693 is about 604.3112559234.

The spelling of 220689693 in words is "two hundred twenty million, six hundred eighty-nine thousand, six hundred ninety-three".