2609897667 has 16 divisors (see below), whose sum is σ = 3751136928. Its totient is φ = 1604551680.

The previous prime is 2609897663. The next prime is 2609897683. The reversal of 2609897667 is 7667989062.

It is not a de Polignac number, because 2609897667 - 2² = 2609897663 is a prime.

It is a super-3 number, since 3×2609897667³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2609897667.

It is not an unprimeable number, because it can be changed into a prime (2609897663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9843 + ... + 72915.

It is an arithmetic number, because the mean of its divisors is an integer number (234446058).

Almost surely, 2^2609897667 is an apocalyptic number.

2609897667 is a deficient number, since it is larger than the sum of its proper divisors (1141239261).

2609897667 is a wasteful number, since it uses less digits than its factorization.

2609897667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64150.

The product of its (nonzero) digits is 13716864, while the sum is 60.

The square root of 2609897667 is about 51087.1575545166. The cubic root of 2609897667 is about 1376.8115260554.

The spelling of 2609897667 in words is "two billion, six hundred nine million, eight hundred ninety-seven thousand, six hundred sixty-seven".