4570661 has 6 divisors (see below), whose sum is σ = 4740210. Its totient is φ = 4401936.

The previous prime is 4570633. The next prime is 4570663. The reversal of 4570661 is 1660754.

It can be written as a sum of positive squares in 3 ways, for example, as 1366561 + 3204100 = 1169^2 + 1790^2 .

It is not a de Polignac number, because 4570661 - 2¹⁸ = 4308517 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4570663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11315 + ... + 11711.

It is an arithmetic number, because the mean of its divisors is an integer number (790035).

Almost surely, 2^4570661 is an apocalyptic number.

It is an amenable number.

4570661 is a deficient number, since it is larger than the sum of its proper divisors (169549).

4570661 is an frugal number, since it uses more digits than its factorization.

4570661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 4570661 is about 2137.9104284324. The cubic root of 4570661 is about 165.9560172826.

Multiplying 4570661 by its sum of digits (29), we get a square (132549169 = 11513²).

4570661 divided by its sum of digits (29) gives a square (157609 = 397²).

The spelling of 4570661 in words is "four million, five hundred seventy thousand, six hundred sixty-one".