63446213 has 4 divisors (see below), whose sum is σ = 66204768. Its totient is φ = 60687660.

The previous prime is 63446203. The next prime is 63446221. The reversal of 63446213 is 31264436.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63446213 - 2⁴ = 63446197 is a prime.

It is a super-3 number, since 3×63446213³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63446203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1379243 + ... + 1379288.

It is an arithmetic number, because the mean of its divisors is an integer number (16551192).

Almost surely, 2^63446213 is an apocalyptic number.

It is an amenable number.

63446213 is a deficient number, since it is larger than the sum of its proper divisors (2758555).

63446213 is a wasteful number, since it uses less digits than its factorization.

63446213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2758554.

The product of its digits is 10368, while the sum is 29.

The square root of 63446213 is about 7965.3131137451. The cubic root of 63446213 is about 398.8429333022.

The spelling of 63446213 in words is "sixty-three million, four hundred forty-six thousand, two hundred thirteen".