63499473 has 24 divisors (see below), whose sum is σ = 95397120. Its totient is φ = 40652640.

The previous prime is 63499417. The next prime is 63499483. The reversal of 63499473 is 37499436.

63499473 is a `hidden beast` number, since 634 + 9 + 9 + 4 + 7 + 3 = 666.

It is not a de Polignac number, because 63499473 - 2⁸ = 63499217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63499483) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57658 + ... + 58748.

It is an arithmetic number, because the mean of its divisors is an integer number (3974880).

Almost surely, 2^63499473 is an apocalyptic number.

It is an amenable number.

63499473 is a deficient number, since it is larger than the sum of its proper divisors (31897647).

63499473 is a wasteful number, since it uses less digits than its factorization.

63499473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349 (or 1346 counting only the distinct ones).

The product of its digits is 489888, while the sum is 45.

The square root of 63499473 is about 7968.6556582651. The cubic root of 63499473 is about 398.9545051488.

The spelling of 63499473 in words is "sixty-three million, four hundred ninety-nine thousand, four hundred seventy-three".