3478561 has 2 divisors, whose sum is σ = 3478562. Its totient is φ = 3478560.

The previous prime is 3478513. The next prime is 3478597. The reversal of 3478561 is 1658743.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2907025 + 571536 = 1705^2 + 756^2 .

It is a cyclic number.

It is not a de Polignac number, because 3478561 - 2²¹ = 1381409 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (3478061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1739280 + 1739281.

It is an arithmetic number, because the mean of its divisors is an integer number (1739281).

Almost surely, 2^3478561 is an apocalyptic number.

It is an amenable number.

3478561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3478561 is an equidigital number, since it uses as much as digits as its factorization.

3478561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 34.

The square root of 3478561 is about 1865.0900782536. The cubic root of 3478561 is about 151.5188066419.

The spelling of 3478561 in words is "three million, four hundred seventy-eight thousand, five hundred sixty-one".