4290661 has 2 divisors, whose sum is σ = 4290662. Its totient is φ = 4290660.

The previous prime is 4290641. The next prime is 4290667. The reversal of 4290661 is 1660924.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2924100 + 1366561 = 1710^2 + 1169^2 .

It is a cyclic number.

It is not a de Polignac number, because 4290661 - 2¹³ = 4282469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4290667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2145330 + 2145331.

It is an arithmetic number, because the mean of its divisors is an integer number (2145331).

Almost surely, 2^4290661 is an apocalyptic number.

It is an amenable number.

4290661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4290661 is an equidigital number, since it uses as much as digits as its factorization.

4290661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 4290661 is about 2071.3910784784. The cubic root of 4290661 is about 162.4955233481.

The spelling of 4290661 in words is "four million, two hundred ninety thousand, six hundred sixty-one".