63916641 has 16 divisors (see below), whose sum is σ = 94933120. Its totient is φ = 42502320.

The previous prime is 63916631. The next prime is 63916681. The reversal of 63916641 is 14661936.

63916641 is a `hidden beast` number, since 6 + 3 + 9 + 1 + 6 + 641 = 666.

It is not a de Polignac number, because 63916641 - 2¹⁵ = 63883873 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63916596 and 63916605.

It is not an unprimeable number, because it can be changed into a prime (63916621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8556 + ... + 14178.

It is an arithmetic number, because the mean of its divisors is an integer number (5933320).

Almost surely, 2^63916641 is an apocalyptic number.

It is an amenable number.

63916641 is a deficient number, since it is larger than the sum of its proper divisors (31016479).

63916641 is a wasteful number, since it uses less digits than its factorization.

63916641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6053 (or 6047 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 63916641 is about 7994.7883649287. The cubic root of 63916641 is about 399.8262599636.

The spelling of 63916641 in words is "sixty-three million, nine hundred sixteen thousand, six hundred forty-one".