63698213 has 8 divisors (see below), whose sum is σ = 65322456. Its totient is φ = 62092800.

The previous prime is 63698189. The next prime is 63698227. The reversal of 63698213 is 31289636.

It can be written as a sum of positive squares in 4 ways, for example, as 702244 + 62995969 = 838^2 + 7937^2 .

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 63698213 - 2¹⁴ = 63681829 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 (63697213) 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, 2273 + ... + 11513.

It is an arithmetic number, because the mean of its divisors is an integer number (8165307).

Almost surely, 2^63698213 is an apocalyptic number.

It is an amenable number.

63698213 is a deficient number, since it is larger than the sum of its proper divisors (1624243).

63698213 is a wasteful number, since it uses less digits than its factorization.

63698213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9415.

The product of its digits is 46656, while the sum is 38.

The square root of 63698213 is about 7981.1160247173. The cubic root of 63698213 is about 399.3702862551.

The spelling of 63698213 in words is "sixty-three million, six hundred ninety-eight thousand, two hundred thirteen".