2770630645 has 4 divisors (see below), whose sum is σ = 3324756780. Its totient is φ = 2216504512.

The previous prime is 2770630627. The next prime is 2770630649. The reversal of 2770630645 is 5460360772.

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 1589058769 + 1181571876 = 39863^2 + 34374^2 .

It is a cyclic number.

It is not a de Polignac number, because 2770630645 - 2⁵ = 2770630613 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 2770630598 and 2770630607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2770630649) 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, 277063060 + ... + 277063069.

It is an arithmetic number, because the mean of its divisors is an integer number (831189195).

Almost surely, 2^2770630645 is an apocalyptic number.

It is an amenable number.

2770630645 is a deficient number, since it is larger than the sum of its proper divisors (554126135).

2770630645 is an equidigital number, since it uses as much as digits as its factorization.

2770630645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554126134.

The product of its (nonzero) digits is 211680, while the sum is 40.

The square root of 2770630645 is about 52636.7803441662. The cubic root of 2770630645 is about 1404.5144482946.

The spelling of 2770630645 in words is "two billion, seven hundred seventy million, six hundred thirty thousand, six hundred forty-five".