63793861 has 4 divisors (see below), whose sum is σ = 64839724. Its totient is φ = 62748000.

The previous prime is 63793859. The next prime is 63793867. The reversal of 63793861 is 16839736.

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 4796100 + 58997761 = 2190^2 + 7681^2 .

It is a cyclic number.

It is not a de Polignac number, because 63793861 - 2¹ = 63793859 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 (63793867) 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, 522840 + ... + 522961.

It is an arithmetic number, because the mean of its divisors is an integer number (16209931).

Almost surely, 2^63793861 is an apocalyptic number.

63793861 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

63793861 is a deficient number, since it is larger than the sum of its proper divisors (1045863).

63793861 is a wasteful number, since it uses less digits than its factorization.

63793861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045862.

The product of its digits is 163296, while the sum is 43.

The square root of 63793861 is about 7987.1059214211. The cubic root of 63793861 is about 399.5700818415.

The spelling of 63793861 in words is "sixty-three million, seven hundred ninety-three thousand, eight hundred sixty-one".