1340648 has 16 divisors (see below), whose sum is σ = 2539680. Its totient is φ = 663408.

The previous prime is 1340639. The next prime is 1340653. The reversal of 1340648 is 8460431.

It is a super-3 number, since 3×1340648³ = 7228789004058533376, which contains 333 as substring.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11 + ... + 1637.

It is an arithmetic number, because the mean of its divisors is an integer number (158730).

2^1340648 is an apocalyptic number.

It is an amenable number.

1340648 is a deficient number, since it is larger than the sum of its proper divisors (1199032).

1340648 is a wasteful number, since it uses less digits than its factorization.

1340648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1736 (or 1732 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1340648 is about 1157.8635498192. The cubic root of 1340648 is about 110.2651455001.

The spelling of 1340648 in words is "one million, three hundred forty thousand, six hundred forty-eight".