2620770261 has 8 divisors (see below), whose sum is σ = 3497561760. Its totient is φ = 1745579472.

The previous prime is 2620770227. The next prime is 2620770289. The reversal of 2620770261 is 1620770262.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2620770261 - 2¹⁸ = 2620508117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2620770961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396351 + ... + 402908.

It is an arithmetic number, because the mean of its divisors is an integer number (437195220).

Almost surely, 2^2620770261 is an apocalyptic number.

It is an amenable number.

2620770261 is a deficient number, since it is larger than the sum of its proper divisors (876791499).

2620770261 is a wasteful number, since it uses less digits than its factorization.

2620770261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800355.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 2620770261 is about 51193.4591622797. The cubic root of 2620770261 is about 1378.7207673892.

Subtracting from 2620770261 its reverse (1620770262), we obtain a palindrome (999999999).

The spelling of 2620770261 in words is "two billion, six hundred twenty million, seven hundred seventy thousand, two hundred sixty-one".