2770261 has 4 divisors (see below), whose sum is σ = 2983372. Its totient is φ = 2557152.

The previous prime is 2770259. The next prime is 2770267. The reversal of 2770261 is 1620772.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1782225 + 988036 = 1335^2 + 994^2 .

It is not a de Polignac number, because 2770261 - 2¹ = 2770259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2770267) 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, 106536 + ... + 106561.

It is an arithmetic number, because the mean of its divisors is an integer number (745843).

2^2770261 is an apocalyptic number.

It is an amenable number.

2770261 is a deficient number, since it is larger than the sum of its proper divisors (213111).

2770261 is a wasteful number, since it uses less digits than its factorization.

2770261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213110.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 2770261 is about 1664.4101057131. The cubic root of 2770261 is about 140.4451984196.

The spelling of 2770261 in words is "two million, seven hundred seventy thousand, two hundred sixty-one".