1670526 has 72 divisors (see below), whose sum is σ = 4357080. Its totient is φ = 459360.

The previous prime is 1670519. The next prime is 1670527. The reversal of 1670526 is 6250761.

It is a Curzon number.

It is a nialpdrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 1670526.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670527) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 28285 + ... + 28343.

It is an arithmetic number, because the mean of its divisors is an integer number (60515).

2^1670526 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1670526, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2178540).

1670526 is an abundant number, since it is smaller than the sum of its proper divisors (2686554).

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

1670526 is a wasteful number, since it uses less digits than its factorization.

1670526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 1670526 is about 1292.4882978194. The cubic root of 1670526 is about 118.6545545157.

The spelling of 1670526 in words is "one million, six hundred seventy thousand, five hundred twenty-six".