2631667 has 4 divisors (see below), whose sum is σ = 2695896. Its totient is φ = 2567440.

The previous prime is 2631661. The next prime is 2631679. The reversal of 2631667 is 7661362.

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 2631667 - 2⁷ = 2631539 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2631661) 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, 32053 + ... + 32134.

It is an arithmetic number, because the mean of its divisors is an integer number (673974).

2^2631667 is an apocalyptic number.

2631667 is a deficient number, since it is larger than the sum of its proper divisors (64229).

2631667 is an equidigital number, since it uses as much as digits as its factorization.

2631667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64228.

The product of its digits is 9072, while the sum is 31.

The square root of 2631667 is about 1622.2413507244. The cubic root of 2631667 is about 138.0628957855.

The spelling of 2631667 in words is "two million, six hundred thirty-one thousand, six hundred sixty-seven".