63682217 has 8 divisors (see below), whose sum is σ = 66054792. Its totient is φ = 61344000.

The previous prime is 63682211. The next prime is 63682219. The reversal of 63682217 is 71228636.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 53158681 + 10523536 = 7291^2 + 3244^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 63682217 - 2¹⁸ = 63420073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63682211) 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, 4784 + ... + 12257.

It is an arithmetic number, because the mean of its divisors is an integer number (8256849).

Almost surely, 2^63682217 is an apocalyptic number.

It is an amenable number.

63682217 is a deficient number, since it is larger than the sum of its proper divisors (2372575).

63682217 is a wasteful number, since it uses less digits than its factorization.

63682217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17179.

The product of its digits is 24192, while the sum is 35.

The square root of 63682217 is about 7980.1138463057. The cubic root of 63682217 is about 399.3368532820.

The spelling of 63682217 in words is "sixty-three million, six hundred eighty-two thousand, two hundred seventeen".