1668370 has 32 divisors (see below), whose sum is σ = 3395520. Its totient is φ = 584640.

The previous prime is 1668361. The next prime is 1668379. The reversal of 1668370 is 738661.

It is an interprime number because it is at equal distance from previous prime (1668361) and next prime (1668379).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668379) 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, 2929 + ... + 3451.

It is an arithmetic number, because the mean of its divisors is an integer number (106110).

2^1668370 is an apocalyptic number.

1668370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1668370 is an abundant number, since it is smaller than the sum of its proper divisors (1727150).

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

1668370 is a wasteful number, since it uses less digits than its factorization.

1668370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 1668370 is about 1291.6539784323. The cubic root of 1668370 is about 118.6034868973.

It can be divided in two parts, 16 and 68370, that added together give a palindrome (68386).

The spelling of 1668370 in words is "one million, six hundred sixty-eight thousand, three hundred seventy".