63988461 has 36 divisors (see below), whose sum is σ = 100961952. Its totient is φ = 40422888.

The previous prime is 63988439. The next prime is 63988469. The reversal of 63988461 is 16488936.

63988461 is a `hidden beast` number, since 639 + 8 + 8 + 4 + 6 + 1 = 666.

It is not a de Polignac number, because 63988461 - 2¹¹ = 63986413 is a prime.

It is a super-2 number, since 2×63988461² = 8189046282297042, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63988469) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 597970 + ... + 598076.

Almost surely, 2^63988461 is an apocalyptic number.

It is an amenable number.

63988461 is a deficient number, since it is larger than the sum of its proper divisors (36973491).

63988461 is an equidigital number, since it uses as much as digits as its factorization.

63988461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252 (or 133 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 63988461 is about 7999.2787799901. The cubic root of 63988461 is about 399.9759589718.

The spelling of 63988461 in words is "sixty-three million, nine hundred eighty-eight thousand, four hundred sixty-one".