5406660 has 108 divisors (see below), whose sum is σ = 19108908. Its totient is φ = 1233792.

The previous prime is 5406649. The next prime is 5406671. The reversal of 5406660 is 666045.

It is an interprime number because it is at equal distance from previous prime (5406649) and next prime (5406671).

It can be written as a sum of positive squares in 2 ways, for example, as 636804 + 4769856 = 798^2 + 2184^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8514 + ... + 9126.

Almost surely, 2^5406660 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 5406660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9554454).

5406660 is an abundant number, since it is smaller than the sum of its proper divisors (13702248).

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

5406660 is a wasteful number, since it uses less digits than its factorization.

5406660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 5406660 is about 2325.2225699920. Note that the first 3 decimals coincide. The cubic root of 5406660 is about 175.5131604322.

The spelling of 5406660 in words is "five million, four hundred six thousand, six hundred sixty".