648231471 has 32 divisors (see below), whose sum is σ = 1061061120. Its totient is φ = 389043072.

The previous prime is 648231469. The next prime is 648231481. The reversal of 648231471 is 174132846.

648231471 is a `hidden beast` number, since 648 + 2 + 3 + 1 + 4 + 7 + 1 = 666.

It is not a de Polignac number, because 648231471 - 2¹ = 648231469 is a prime.

It is a super-3 number, since 3×648231471³ (a number of 27 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648231431) 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, 20145 + ... + 41258.

It is an arithmetic number, because the mean of its divisors is an integer number (33158160).

Almost surely, 2^648231471 is an apocalyptic number.

648231471 is a deficient number, since it is larger than the sum of its proper divisors (412829649).

648231471 is a wasteful number, since it uses less digits than its factorization.

648231471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61452 (or 61446 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 648231471 is about 25460.3902366009. The cubic root of 648231471 is about 865.4527666314.

The spelling of 648231471 in words is "six hundred forty-eight million, two hundred thirty-one thousand, four hundred seventy-one".