63220817 has 16 divisors (see below), whose sum is σ = 70268352. Its totient is φ = 56401920.

The previous prime is 63220789. The next prime is 63220819. The reversal of 63220817 is 71802236.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 63220817 - 2¹⁴ = 63204433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63220817.

It is not an unprimeable number, because it can be changed into a prime (63220819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205778 + ... + 206084.

It is an arithmetic number, because the mean of its divisors is an integer number (4391772).

Almost surely, 2^63220817 is an apocalyptic number.

It is an amenable number.

63220817 is a deficient number, since it is larger than the sum of its proper divisors (7047535).

63220817 is a wasteful number, since it uses less digits than its factorization.

63220817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 63220817 is about 7951.1519291232. The cubic root of 63220817 is about 398.3700694203.

The spelling of 63220817 in words is "sixty-three million, two hundred twenty thousand, eight hundred seventeen".