8401667 has 4 divisors (see below), whose sum is σ = 8843880. Its totient is φ = 7959456.

The previous prime is 8401661. The next prime is 8401681. The reversal of 8401667 is 7661048.

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 8401667 - 2⁸ = 8401411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8401661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221078 + ... + 221115.

It is an arithmetic number, because the mean of its divisors is an integer number (2210970).

Almost surely, 2^8401667 is an apocalyptic number.

8401667 is a deficient number, since it is larger than the sum of its proper divisors (442213).

8401667 is a wasteful number, since it uses less digits than its factorization.

8401667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442212.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 8401667 is about 2898.5629197932. The cubic root of 8401667 is about 203.2927175587.

The spelling of 8401667 in words is "eight million, four hundred one thousand, six hundred sixty-seven".