1313649 has 12 divisors (see below), whose sum is σ = 1908816. Its totient is φ = 870552.

The previous prime is 1313633. The next prime is 1313651. The reversal of 1313649 is 9463131.

1313649 is a `hidden beast` number, since 1 + 3 + 13 + 649 = 666.

It is not a de Polignac number, because 1313649 - 2⁴ = 1313633 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

1313649 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1313629) 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, 1722 + ... + 2364.

It is an arithmetic number, because the mean of its divisors is an integer number (159068).

2^1313649 is an apocalyptic number.

It is an amenable number.

1313649 is a deficient number, since it is larger than the sum of its proper divisors (595167).

1313649 is a wasteful number, since it uses less digits than its factorization.

1313649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876 (or 873 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 1313649 is about 1146.1452787496. The cubic root of 1313649 is about 109.5199188134.

The spelling of 1313649 in words is "one million, three hundred thirteen thousand, six hundred forty-nine".