1607668 has 6 divisors (see below), whose sum is σ = 2813426. Its totient is φ = 803832.

The previous prime is 1607663. The next prime is 1607681. The reversal of 1607668 is 8667061.

It can be written as a sum of positive squares in only one way, i.e., 898704 + 708964 = 948^2 + 842^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1607663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200955 + ... + 200962.

2^1607668 is an apocalyptic number.

It is an amenable number.

1607668 is a deficient number, since it is larger than the sum of its proper divisors (1205758).

1607668 is a wasteful number, since it uses less digits than its factorization.

1607668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401921 (or 401919 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 1607668 is about 1267.9384843122. The cubic root of 1607668 is about 117.1472565697.

The spelling of 1607668 in words is "one million, six hundred seven thousand, six hundred sixty-eight".