1270172663 has 4 divisors (see below), whose sum is σ = 1344888720. Its totient is φ = 1195456608.

The previous prime is 1270172647. The next prime is 1270172671. The reversal of 1270172663 is 3662710721.

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

It is a cyclic number.

It is not a de Polignac number, because 1270172663 - 2⁴ = 1270172647 is a prime.

It is a super-2 number, since 2×1270172663² = 3226677187665023138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1270172863) 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, 37358003 + ... + 37358036.

It is an arithmetic number, because the mean of its divisors is an integer number (336222180).

Almost surely, 2^1270172663 is an apocalyptic number.

1270172663 is a deficient number, since it is larger than the sum of its proper divisors (74716057).

1270172663 is an equidigital number, since it uses as much as digits as its factorization.

1270172663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74716056.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 1270172663 is about 35639.4818003854. The cubic root of 1270172663 is about 1082.9812073301.

The spelling of 1270172663 in words is "one billion, two hundred seventy million, one hundred seventy-two thousand, six hundred sixty-three".