63983471 has 4 divisors (see below), whose sum is σ = 65712792. Its totient is φ = 62254152.

The previous prime is 63983453. The next prime is 63983501. The reversal of 63983471 is 17438936.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63983471 - 2¹⁸ = 63721327 is a prime.

It is a super-3 number, since 3×63983471³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63983071) 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, 864605 + ... + 864678.

It is an arithmetic number, because the mean of its divisors is an integer number (16428198).

Almost surely, 2^63983471 is an apocalyptic number.

63983471 is a deficient number, since it is larger than the sum of its proper divisors (1729321).

63983471 is a wasteful number, since it uses less digits than its factorization.

63983471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729320.

The product of its digits is 108864, while the sum is 41.

The square root of 63983471 is about 7998.9668707903. The cubic root of 63983471 is about 399.9655616184.

The spelling of 63983471 in words is "sixty-three million, nine hundred eighty-three thousand, four hundred seventy-one".