963607221 has 6 divisors (see below), whose sum is σ = 1391877110. Its totient is φ = 642404808.

The previous prime is 963607219. The next prime is 963607223. The reversal of 963607221 is 122706369.

It is an interprime number because it is at equal distance from previous prime (963607219) and next prime (963607223).

It can be written as a sum of positive squares in only one way, i.e., 644448996 + 319158225 = 25386^2 + 17865^2 .

It is not a de Polignac number, because 963607221 - 2¹ = 963607219 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 (963607223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53533726 + ... + 53533743.

Almost surely, 2^963607221 is an apocalyptic number.

It is an amenable number.

963607221 is a deficient number, since it is larger than the sum of its proper divisors (428269889).

963607221 is a wasteful number, since it uses less digits than its factorization.

963607221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107067475 (or 107067472 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 963607221 is about 31042.0234681955. The cubic root of 963607221 is about 987.7188648248.

The spelling of 963607221 in words is "nine hundred sixty-three million, six hundred seven thousand, two hundred twenty-one".