1671013 has 4 divisors (see below), whose sum is σ = 1678540. Its totient is φ = 1663488.

The previous prime is 1670983. The next prime is 1671041. The reversal of 1671013 is 3101761.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1127844 + 543169 = 1062^2 + 737^2 .

It is a 5-Lehmer number, since φ(1671013) divides (1671013-1)⁵.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1671013 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1671053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3420 + ... + 3877.

It is an arithmetic number, because the mean of its divisors is an integer number (419635).

2^1671013 is an apocalyptic number.

It is an amenable number.

1671013 is a deficient number, since it is larger than the sum of its proper divisors (7527).

1671013 is an equidigital number, since it uses as much as digits as its factorization.

1671013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7526.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 1671013 is about 1292.6766803807. The cubic root of 1671013 is about 118.6660836496. Note that the first 3 decimals are identical.

Adding to 1671013 its reverse (3101761), we get a palindrome (4772774).

The spelling of 1671013 in words is "one million, six hundred seventy-one thousand, thirteen".