1340658 has 64 divisors (see below), whose sum is σ = 3392640. Its totient is φ = 388800.

The previous prime is 1340653. The next prime is 1340681. The reversal of 1340658 is 8560431.

1340658 is a `hidden beast` number, since 1 + 3 + 4 + 0 + 658 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21948 + ... + 22008.

It is an arithmetic number, because the mean of its divisors is an integer number (53010).

2^1340658 is an apocalyptic number.

1340658 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1340658, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1696320).

1340658 is an abundant number, since it is smaller than the sum of its proper divisors (2051982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1340658 is a wasteful number, since it uses less digits than its factorization.

1340658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1340658 is about 1157.8678681093. The cubic root of 1340658 is about 110.2654196583.

The spelling of 1340658 in words is "one million, three hundred forty thousand, six hundred fifty-eight".