63922861 has 4 divisors (see below), whose sum is σ = 63948924. Its totient is φ = 63896800.

The previous prime is 63922853. The next prime is 63922877. The reversal of 63922861 is 16822936.

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 24157225 + 39765636 = 4915^2 + 6306^2 .

It is a cyclic number.

It is not a de Polignac number, because 63922861 - 2³ = 63922853 is a prime.

It is a super-2 number, since 2×63922861² = 8172264316850642, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63922861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63922801) 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, 8920 + ... + 14401.

It is an arithmetic number, because the mean of its divisors is an integer number (15987231).

Almost surely, 2^63922861 is an apocalyptic number.

It is an amenable number.

63922861 is a deficient number, since it is larger than the sum of its proper divisors (26063).

63922861 is a wasteful number, since it uses less digits than its factorization.

63922861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26062.

The product of its digits is 31104, while the sum is 37.

The square root of 63922861 is about 7995.1773588833. The cubic root of 63922861 is about 399.8392291405.

The spelling of 63922861 in words is "sixty-three million, nine hundred twenty-two thousand, eight hundred sixty-one".