63445005 has 32 divisors (see below), whose sum is σ = 121470720. Its totient is φ = 31233600.

The previous prime is 63444991. The next prime is 63445007. The reversal of 63445005 is 50054436.

It is not a de Polignac number, because 63445005 - 2⁴ = 63444989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 63445005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63445007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16321 + ... + 19830.

It is an arithmetic number, because the mean of its divisors is an integer number (3795960).

Almost surely, 2^63445005 is an apocalyptic number.

63445005 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

63445005 is a deficient number, since it is larger than the sum of its proper divisors (58025715).

63445005 is a wasteful number, since it uses less digits than its factorization.

63445005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36178 (or 36172 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 63445005 is about 7965.2372846011. The cubic root of 63445005 is about 398.8404019963.

The spelling of 63445005 in words is "sixty-three million, four hundred forty-five thousand, five".