1227001705 has 4 divisors (see below), whose sum is σ = 1472402052. Its totient is φ = 981601360.

The previous prime is 1227001691. The next prime is 1227001717. The reversal of 1227001705 is 5071007221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5071007221 = 7 ⋅724429603.

It can be written as a sum of positive squares in 2 ways, for example, as 541818729 + 685182976 = 23277^2 + 26176^2 .

It is not a de Polignac number, because 1227001705 - 2⁷ = 1227001577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1227001705.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122700166 + ... + 122700175.

It is an arithmetic number, because the mean of its divisors is an integer number (368100513).

Almost surely, 2^1227001705 is an apocalyptic number.

It is an amenable number.

1227001705 is a deficient number, since it is larger than the sum of its proper divisors (245400347).

1227001705 is an equidigital number, since it uses as much as digits as its factorization.

1227001705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245400346.

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 1227001705 is about 35028.5841135493. The cubic root of 1227001705 is about 1070.5699659389.

Adding to 1227001705 its reverse (5071007221), we get a palindrome (6298008926).

The spelling of 1227001705 in words is "one billion, two hundred twenty-seven million, one thousand, seven hundred five".