1614661 has 2 divisors, whose sum is σ = 1614662. Its totient is φ = 1614660.

The previous prime is 1614659. The next prime is 1614671. The reversal of 1614661 is 1664161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1512900 + 101761 = 1230^2 + 319^2 .

It is a cyclic number.

It is not a de Polignac number, because 1614661 - 2¹ = 1614659 is a prime.

Together with 1614659, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1614631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 807330 + 807331.

It is an arithmetic number, because the mean of its divisors is an integer number (807331).

2^1614661 is an apocalyptic number.

It is an amenable number.

1614661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1614661 is an equidigital number, since it uses as much as digits as its factorization.

1614661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 25.

The square root of 1614661 is about 1270.6931179478. The cubic root of 1614661 is about 117.3168657660.

It can be divided in two parts, 16146 and 61, that multiplied together give a triangular number (984906 = T₁₄₀₃).

The spelling of 1614661 in words is "one million, six hundred fourteen thousand, six hundred sixty-one".