1319661 has 12 divisors (see below), whose sum is σ = 2178592. Its totient is φ = 754056.

The previous prime is 1319651. The next prime is 1319687. The reversal of 1319661 is 1669131.

It is a de Polignac number, because none of the positive numbers 2^k-1319661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1319651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10411 + ... + 10536.

2^1319661 is an apocalyptic number.

It is an amenable number.

1319661 is a deficient number, since it is larger than the sum of its proper divisors (858931).

1319661 is a wasteful number, since it uses less digits than its factorization.

1319661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20960 (or 20957 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 1319661 is about 1148.7649890208. The cubic root of 1319661 is about 109.6867395910.

The spelling of 1319661 in words is "one million, three hundred nineteen thousand, six hundred sixty-one".