464871636 has 42 divisors (see below), whose sum is σ = 1219737722. Its totient is φ = 154956240.

The previous prime is 464871619. The next prime is 464871637. The reversal of 464871636 is 636178464.

It is a happy number.

464871636 is a `hidden beast` number, since 4 + 6 + 4 + 8 + 7 + 1 + 636 = 666.

It can be written as a sum of positive squares in only one way, i.e., 441252036 + 23619600 = 21006^2 + 4860^2 .

It is a super-2 number, since 2×464871636² = 432211275914632992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 464871591 and 464871600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (464871637) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 76795 + ... + 82626.

Almost surely, 2^464871636 is an apocalyptic number.

It is an amenable number.

464871636 is an abundant number, since it is smaller than the sum of its proper divisors (754866086).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

464871636 is a wasteful number, since it uses less digits than its factorization.

464871636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159443 (or 159426 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 464871636 is about 21560.8820784308. The cubic root of 464871636 is about 774.6597943499.

The spelling of 464871636 in words is "four hundred sixty-four million, eight hundred seventy-one thousand, six hundred thirty-six".