1670081 has 16 divisors (see below), whose sum is σ = 2083200. Its totient is φ = 1306368.

The previous prime is 1670059. The next prime is 1670089. The reversal of 1670081 is 1800761.

It is not a de Polignac number, because 1670081 - 2⁶ = 1670017 is a prime.

It is a super-2 number, since 2×1670081² = 5578341093122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1670089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3641 + ... + 4073.

It is an arithmetic number, because the mean of its divisors is an integer number (130200).

2^1670081 is an apocalyptic number.

It is an amenable number.

1670081 is a deficient number, since it is larger than the sum of its proper divisors (413119).

1670081 is a wasteful number, since it uses less digits than its factorization.

1670081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 1670081 is about 1292.3161377929. The cubic root of 1670081 is about 118.6440177215.

The spelling of 1670081 in words is "one million, six hundred seventy thousand, eighty-one".