4507661 has 4 divisors (see below), whose sum is σ = 4564800. Its totient is φ = 4450524.

The previous prime is 4507651. The next prime is 4507667. The reversal of 4507661 is 1667054.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4507661 - 2¹⁸ = 4245517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4507667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28451 + ... + 28608.

It is an arithmetic number, because the mean of its divisors is an integer number (1141200).

Almost surely, 2^4507661 is an apocalyptic number.

It is an amenable number.

4507661 is a deficient number, since it is larger than the sum of its proper divisors (57139).

4507661 is an equidigital number, since it uses as much as digits as its factorization.

4507661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57138.

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

The square root of 4507661 is about 2123.1252906977. The cubic root of 4507661 is about 165.1899984565.

The spelling of 4507661 in words is "four million, five hundred seven thousand, six hundred sixty-one".