1270740766 has 4 divisors (see below), whose sum is σ = 1906111152. Its totient is φ = 635370382.

The previous prime is 1270740743. The next prime is 1270740781. The reversal of 1270740766 is 6670470721.

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

It is a super-2 number, since 2×1270740766² = 3229564188748533512, which contains 22 as substring.

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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317685190 + ... + 317685193.

It is an arithmetic number, because the mean of its divisors is an integer number (476527788).

Almost surely, 2^1270740766 is an apocalyptic number.

1270740766 is a deficient number, since it is larger than the sum of its proper divisors (635370386).

1270740766 is an equidigital number, since it uses as much as digits as its factorization.

1270740766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635370385.

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 1270740766 is about 35647.4510449204. The cubic root of 1270740766 is about 1083.1426429070.

The spelling of 1270740766 in words is "one billion, two hundred seventy million, seven hundred forty thousand, seven hundred sixty-six".