63820793 has 4 divisors (see below), whose sum is σ = 66021540. Its totient is φ = 61620048.

The previous prime is 63820787. The next prime is 63820807. The reversal of 63820793 is 39702836.

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

It can be written as a sum of positive squares in 2 ways, for example, as 39100009 + 24720784 = 6253^2 + 4972^2 .

It is a cyclic number.

It is not a de Polignac number, because 63820793 - 2⁴ = 63820777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63820093) 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, 1100330 + ... + 1100387.

It is an arithmetic number, because the mean of its divisors is an integer number (16505385).

Almost surely, 2^63820793 is an apocalyptic number.

It is an amenable number.

63820793 is a deficient number, since it is larger than the sum of its proper divisors (2200747).

63820793 is a wasteful number, since it uses less digits than its factorization.

63820793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2200746.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 63820793 is about 7988.7917108910. The cubic root of 63820793 is about 399.6263030686.

The spelling of 63820793 in words is "sixty-three million, eight hundred twenty thousand, seven hundred ninety-three".