1670520 has 32 divisors (see below), whose sum is σ = 5011920. Its totient is φ = 445440.

The previous prime is 1670519. The next prime is 1670527. The reversal of 1670520 is 250761.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6841 + ... + 7080.

2^1670520 is an apocalyptic number.

1670520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1670520 is an abundant number, since it is smaller than the sum of its proper divisors (3341400).

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

1670520 is a wasteful number, since it uses less digits than its factorization.

1670520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13935 (or 13931 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 1670520 is about 1292.4859767131. The cubic root of 1670520 is about 118.6544124590.

The spelling of 1670520 in words is "one million, six hundred seventy thousand, five hundred twenty".