63906471 has 12 divisors (see below), whose sum is σ = 94456648. Its totient is φ = 41613264.

The previous prime is 63906439. The next prime is 63906473. The reversal of 63906471 is 17460936.

63906471 is a `hidden beast` number, since 6 + 3 + 9 + 0 + 647 + 1 = 666.

It is not a de Polignac number, because 63906471 - 2⁵ = 63906439 is a prime.

It is a super-3 number, since 3×63906471³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63906473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82180 + ... + 82953.

Almost surely, 2^63906471 is an apocalyptic number.

63906471 is a deficient number, since it is larger than the sum of its proper divisors (30550177).

63906471 is a wasteful number, since it uses less digits than its factorization.

63906471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165182 (or 165179 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 63906471 is about 7994.1523002755. The cubic root of 63906471 is about 399.8050529212.

The spelling of 63906471 in words is "sixty-three million, nine hundred six thousand, four hundred seventy-one".