5640887466 has 80 divisors (see below), whose sum is σ = 13664888160. Its totient is φ = 1733153760.

The previous prime is 5640887459. The next prime is 5640887477. The reversal of 5640887466 is 6647880465.

5640887466 is a `hidden beast` number, since 564 + 0 + 8 + 8 + 74 + 6 + 6 = 666.

It is a super-2 number, since 2×5640887466² = 63639222808151802312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 89121 + ... + 138651.

It is an arithmetic number, because the mean of its divisors is an integer number (170811102).

Almost surely, 2^5640887466 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5640887466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6832444080).

5640887466 is an abundant number, since it is smaller than the sum of its proper divisors (8024000694).

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

5640887466 is a wasteful number, since it uses less digits than its factorization.

5640887466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49601 (or 49592 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 54.

The square root of 5640887466 is about 75105.8417568168. The cubic root of 5640887466 is about 1780.1194493337.

The spelling of 5640887466 in words is "five billion, six hundred forty million, eight hundred eighty-seven thousand, four hundred sixty-six".