1670631 has 8 divisors (see below), whose sum is σ = 2250864. Its totient is φ = 1102080.

The previous prime is 1670629. The next prime is 1670633. The reversal of 1670631 is 1360761.

It is an interprime number because it is at equal distance from previous prime (1670629) and next prime (1670633).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1670631 - 2¹ = 1670629 is a prime.

It is a super-2 number, since 2×1670631² = 5582015876322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2580 + ... + 3161.

It is an arithmetic number, because the mean of its divisors is an integer number (281358).

2^1670631 is an apocalyptic number.

1670631 is a deficient number, since it is larger than the sum of its proper divisors (580233).

1670631 is an equidigital number, since it uses as much as digits as its factorization.

1670631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5841.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 1670631 is about 1292.5289165044. The cubic root of 1670631 is about 118.6570404527.

The spelling of 1670631 in words is "one million, six hundred seventy thousand, six hundred thirty-one".