1001667 has 8 divisors (see below), whose sum is σ = 1342224. Its totient is φ = 664448.

The previous prime is 1001659. The next prime is 1001669. The reversal of 1001667 is 7661001.

1001667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 1001667 - 2³ = 1001659 is a prime.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (1001669) 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, 18 + ... + 1415.

It is an arithmetic number, because the mean of its divisors is an integer number (167778).

2^1001667 is an apocalyptic number.

1001667 is a deficient number, since it is larger than the sum of its proper divisors (340557).

1001667 is a wasteful number, since it uses less digits than its factorization.

1001667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 1001667 is about 1000.8331529281. The cubic root of 1001667 is about 100.0555358187.

Adding to 1001667 its reverse (7661001), we get a palindrome (8662668).

The spelling of 1001667 in words is "one million, one thousand, six hundred sixty-seven".