4631985 has 20 divisors (see below), whose sum is σ = 8303988. Its totient is φ = 2470176.

The previous prime is 4631903. The next prime is 4631987. The reversal of 4631985 is 5891364.

4631985 is a `hidden beast` number, since 463 + 198 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1520289 + 3111696 = 1233^2 + 1764^2 .

It is not a de Polignac number, because 4631985 - 2¹⁰ = 4630961 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4631987) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5314 + ... + 6123.

Almost surely, 2^4631985 is an apocalyptic number.

4631985 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4631985 is a deficient number, since it is larger than the sum of its proper divisors (3672003).

4631985 is a wasteful number, since it uses less digits than its factorization.

4631985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11454 (or 11445 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 4631985 is about 2152.2046835745. The cubic root of 4631985 is about 166.6949263192.

It can be divided in two parts, 463198 and 5, that added together give a triangular number (463203 = T₉₆₂).

The spelling of 4631985 in words is "four million, six hundred thirty-one thousand, nine hundred eighty-five".