864356472 has 144 divisors (see below), whose sum is σ = 2735001360. Its totient is φ = 245887488.

The previous prime is 864356413. The next prime is 864356497. The reversal of 864356472 is 274653468.

864356472 is a `hidden beast` number, since 86 + 4 + 3 + 564 + 7 + 2 = 666.

It is a super-2 number, since 2×864356472² = 1494224221376573568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1188573 + ... + 1189299.

It is an arithmetic number, because the mean of its divisors is an integer number (18993065).

Almost surely, 2^864356472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 864356472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1367500680).

864356472 is an abundant number, since it is smaller than the sum of its proper divisors (1870644888).

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

864356472 is a wasteful number, since it uses less digits than its factorization.

864356472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090 (or 1076 counting only the distinct ones).

The product of its digits is 967680, while the sum is 45.

The square root of 864356472 is about 29399.9399999388. The cubic root of 864356472 is about 952.5716002142.

The spelling of 864356472 in words is "eight hundred sixty-four million, three hundred fifty-six thousand, four hundred seventy-two".