5646515784 has 144 divisors (see below), whose sum is σ = 17781934320. Its totient is φ = 1489138560.

The previous prime is 5646515783. The next prime is 5646515839. The reversal of 5646515784 is 4875156465.

It is a happy number.

It is a super-2 number, since 2×5646515784² = 63766280997922269312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5646515783) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 184539 + ... + 212949.

It is an arithmetic number, because the mean of its divisors is an integer number (123485655).

Almost surely, 2^5646515784 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 5646515784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8890967160).

5646515784 is an abundant number, since it is smaller than the sum of its proper divisors (12135418536).

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

5646515784 is a wasteful number, since it uses less digits than its factorization.

5646515784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28460 (or 28436 counting only the distinct ones).

The product of its digits is 4032000, while the sum is 51.

The square root of 5646515784 is about 75143.3016575663. The cubic root of 5646515784 is about 1780.7113034816.

The spelling of 5646515784 in words is "five billion, six hundred forty-six million, five hundred fifteen thousand, seven hundred eighty-four".