1340651 has 8 divisors (see below), whose sum is σ = 1452864. Its totient is φ = 1229760.

The previous prime is 1340639. The next prime is 1340653. The reversal of 1340651 is 1560431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1340651 - 2⁶ = 1340587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3470 + ... + 3836.

It is an arithmetic number, because the mean of its divisors is an integer number (181608).

2^1340651 is an apocalyptic number.

1340651 is a deficient number, since it is larger than the sum of its proper divisors (112213).

1340651 is a wasteful number, since it uses less digits than its factorization.

1340651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1340651 is about 1157.8648453079. The cubic root of 1340651 is about 110.2652277477.

It can be divided in two parts, 1340 and 651, that added together give a palindrome (1991).

The spelling of 1340651 in words is "one million, three hundred forty thousand, six hundred fifty-one".