5726658 has 32 divisors (see below), whose sum is σ = 13317120. Its totient is φ = 1607760.

The previous prime is 5726639. The next prime is 5726663. The reversal of 5726658 is 8566275.

It is a happy number.

It is a super-2 number, since 2×5726658² = 65589223697928, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1323 + ... + 3633.

It is an arithmetic number, because the mean of its divisors is an integer number (416160).

Almost surely, 2^5726658 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5726658, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6658560).

5726658 is an abundant number, since it is smaller than the sum of its proper divisors (7590462).

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

5726658 is a wasteful number, since it uses less digits than its factorization.

5726658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2382.

The product of its digits is 100800, while the sum is 39.

The square root of 5726658 is about 2393.0436686362. The cubic root of 5726658 is about 178.9096430247.

The spelling of 5726658 in words is "five million, seven hundred twenty-six thousand, six hundred fifty-eight".