1351668 has 24 divisors (see below), whose sum is σ = 3199168. Its totient is φ = 444096.

The previous prime is 1351667. The next prime is 1351697. The reversal of 1351668 is 8661531.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351663) 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, 105 + ... + 1647.

2^1351668 is an apocalyptic number.

It is an amenable number.

1351668 is an abundant number, since it is smaller than the sum of its proper divisors (1847500).

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

1351668 is a wasteful number, since it uses less digits than its factorization.

1351668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623 (or 1621 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 1351668 is about 1162.6125751943. The cubic root of 1351668 is about 110.5664444811.

It can be divided in two parts, 13 and 51668, that added together give a triangular number (51681 = T₃₂₁).

The spelling of 1351668 in words is "one million, three hundred fifty-one thousand, six hundred sixty-eight".