1201667 has 4 divisors (see below), whose sum is σ = 1204560. Its totient is φ = 1198776.

The previous prime is 1201643. The next prime is 1201687. The reversal of 1201667 is 7661021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1201667 - 2¹⁰ = 1200643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 692 + ... + 1697.

It is an arithmetic number, because the mean of its divisors is an integer number (301140).

2^1201667 is an apocalyptic number.

1201667 is a deficient number, since it is larger than the sum of its proper divisors (2893).

1201667 is an equidigital number, since it uses as much as digits as its factorization.

1201667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2892.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 1201667 is about 1096.2057288666. The cubic root of 1201667 is about 106.3150411457.

Adding to 1201667 its reverse (7661021), we get a palindrome (8862688).

The spelling of 1201667 in words is "one million, two hundred one thousand, six hundred sixty-seven".