1271670 has 64 divisors (see below), whose sum is σ = 3386880. Its totient is φ = 304128.

The previous prime is 1271659. The next prime is 1271671. The reversal of 1271670 is 761721.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1271670.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1271671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13062 + ... + 13158.

It is an arithmetic number, because the mean of its divisors is an integer number (52920).

2^1271670 is an apocalyptic number.

1271670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1271670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1693440).

1271670 is an abundant number, since it is smaller than the sum of its proper divisors (2115210).

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

1271670 is a wasteful number, since it uses less digits than its factorization.

1271670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149.

The product of its (nonzero) digits is 588, while the sum is 24.

The square root of 1271670 is about 1127.6834662262. The cubic root of 1271670 is about 108.3406595966.

The spelling of 1271670 in words is "one million, two hundred seventy-one thousand, six hundred seventy".