2620765667 has 4 divisors (see below), whose sum is σ = 2822363040. Its totient is φ = 2419168296.

The previous prime is 2620765657. The next prime is 2620765673. The reversal of 2620765667 is 7665670262.

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 2620765667 - 2⁶ = 2620765603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2620765607) 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, 100798667 + ... + 100798692.

It is an arithmetic number, because the mean of its divisors is an integer number (705590760).

Almost surely, 2^2620765667 is an apocalyptic number.

2620765667 is a deficient number, since it is larger than the sum of its proper divisors (201597373).

2620765667 is a wasteful number, since it uses less digits than its factorization.

2620765667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201597372.

The product of its (nonzero) digits is 1270080, while the sum is 47.

The square root of 2620765667 is about 51193.4142932467. The cubic root of 2620765667 is about 1378.7199617931.

The spelling of 2620765667 in words is "two billion, six hundred twenty million, seven hundred sixty-five thousand, six hundred sixty-seven".