1270661 has 4 divisors (see below), whose sum is σ = 1452192. Its totient is φ = 1089132.

The previous prime is 1270657. The next prime is 1270667. The reversal of 1270661 is 1660721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1270661 - 2² = 1270657 is a prime.

It is a super-2 number, since 2×1270661² = 3229158753842, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1270667) 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, 90755 + ... + 90768.

It is an arithmetic number, because the mean of its divisors is an integer number (363048).

2^1270661 is an apocalyptic number.

It is an amenable number.

1270661 is a deficient number, since it is larger than the sum of its proper divisors (181531).

1270661 is an equidigital number, since it uses as much as digits as its factorization.

1270661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181530.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 1270661 is about 1127.2360001348. The cubic root of 1270661 is about 108.3119979023.

The spelling of 1270661 in words is "one million, two hundred seventy thousand, six hundred sixty-one".