2609967 has 4 divisors (see below), whose sum is σ = 3479960. Its totient is φ = 1739976.

The previous prime is 2609963. The next prime is 2609989. The reversal of 2609967 is 7699062.

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

It is not a de Polignac number, because 2609967 - 2² = 2609963 is a prime.

It is a super-3 number, since 3×2609967³ = 53336719831880502189, which contains 333 as substring.

It is a D-number.

It is a Duffinian number.

2609967 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2609963) 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, 434992 + ... + 434997.

It is an arithmetic number, because the mean of its divisors is an integer number (869990).

2^2609967 is an apocalyptic number.

2609967 is a deficient number, since it is larger than the sum of its proper divisors (869993).

2609967 is an equidigital number, since it uses as much as digits as its factorization.

2609967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869992.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 2609967 is about 1615.5392288645. The cubic root of 2609967 is about 137.6823717801.

It can be divided in two parts, 260996 and 7, that added together give a triangular number (261003 = T₇₂₂).

The spelling of 2609967 in words is "two million, six hundred nine thousand, nine hundred sixty-seven".