63216379 has 4 divisors (see below), whose sum is σ = 63640800. Its totient is φ = 62791960.

The previous prime is 63216371. The next prime is 63216451. The reversal of 63216379 is 97361236.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63216379 - 2³ = 63216371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63216371) 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, 211987 + ... + 212284.

It is an arithmetic number, because the mean of its divisors is an integer number (15910200).

Almost surely, 2^63216379 is an apocalyptic number.

63216379 is a deficient number, since it is larger than the sum of its proper divisors (424421).

63216379 is a wasteful number, since it uses less digits than its factorization.

63216379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424420.

The product of its digits is 40824, while the sum is 37.

The square root of 63216379 is about 7950.8728451661. The cubic root of 63216379 is about 398.3607475555.

The spelling of 63216379 in words is "sixty-three million, two hundred sixteen thousand, three hundred seventy-nine".