4615661 has 2 divisors, whose sum is σ = 4615662. Its totient is φ = 4615660.

The previous prime is 4615627. The next prime is 4615673. The reversal of 4615661 is 1665164.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2941225 + 1674436 = 1715^2 + 1294^2 .

It is a cyclic number.

It is not a de Polignac number, because 4615661 - 2¹⁰ = 4614637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4615601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2307830 + 2307831.

It is an arithmetic number, because the mean of its divisors is an integer number (2307831).

Almost surely, 2^4615661 is an apocalyptic number.

It is an amenable number.

4615661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4615661 is an equidigital number, since it uses as much as digits as its factorization.

4615661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 29.

The square root of 4615661 is about 2148.4089461739. The cubic root of 4615661 is about 166.4988742420.

The spelling of 4615661 in words is "four million, six hundred fifteen thousand, six hundred sixty-one".