3654961 has 2 divisors, whose sum is σ = 3654962. Its totient is φ = 3654960.

The previous prime is 3654947. The next prime is 3654997. The reversal of 3654961 is 1694563.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3385600 + 269361 = 1840^2 + 519^2 .

It is a cyclic number.

It is not a de Polignac number, because 3654961 - 2⁵ = 3654929 is a prime.

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

3654961 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (3654361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1827480 + 1827481.

It is an arithmetic number, because the mean of its divisors is an integer number (1827481).

Almost surely, 2^3654961 is an apocalyptic number.

It is an amenable number.

3654961 is a deficient number, since it is larger than the sum of its proper divisors (1).

3654961 is an equidigital number, since it uses as much as digits as its factorization.

3654961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 34.

The square root of 3654961 is about 1911.7952296206. The cubic root of 3654961 is about 154.0378975714.

The spelling of 3654961 in words is "three million, six hundred fifty-four thousand, nine hundred sixty-one".