2770205 has 8 divisors (see below), whose sum is σ = 3343704. Its totient is φ = 2203200.

The previous prime is 2770199. The next prime is 2770211. The reversal of 2770205 is 5020772.

It is an interprime number because it is at equal distance from previous prime (2770199) and next prime (2770211).

It can be written as a sum of positive squares in 4 ways, for example, as 190969 + 2579236 = 437^2 + 1606^2 .

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

It is not a de Polignac number, because 2770205 - 2¹² = 2766109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 626 + ... + 2435.

It is an arithmetic number, because the mean of its divisors is an integer number (417963).

2^2770205 is an apocalyptic number.

It is an amenable number.

2770205 is a deficient number, since it is larger than the sum of its proper divisors (573499).

2770205 is a wasteful number, since it uses less digits than its factorization.

2770205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3247.

The product of its (nonzero) digits is 980, while the sum is 23.

The square root of 2770205 is about 1664.3932828511. The cubic root of 2770205 is about 140.4442520607. Note that the first 3 decimals are identical.

Adding to 2770205 its reverse (5020772), we get a palindrome (7790977).

The spelling of 2770205 in words is "two million, seven hundred seventy thousand, two hundred five".