2106261767 has 6 divisors (see below), whose sum is σ = 2237447928. Its totient is φ = 1982363744.

The previous prime is 2106261763. The next prime is 2106261779. The reversal of 2106261767 is 7671626012.

It is not a de Polignac number, because 2106261767 - 2² = 2106261763 is a prime.

It is a super-2 number, since 2×2106261767² = 8872677262251924578, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2106261767.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106261763) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3643763 + ... + 3644340.

It is an arithmetic number, because the mean of its divisors is an integer number (372907988).

Almost surely, 2^2106261767 is an apocalyptic number.

2106261767 is a deficient number, since it is larger than the sum of its proper divisors (131186161).

2106261767 is an equidigital number, since it uses as much as digits as its factorization.

2106261767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7288137 (or 7288120 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 2106261767 is about 45894.0275744023. The cubic root of 2106261767 is about 1281.8507096713.

Adding to 2106261767 its reverse (7671626012), we get a palindrome (9777887779).

The spelling of 2106261767 in words is "two billion, one hundred six million, two hundred sixty-one thousand, seven hundred sixty-seven".