1270666 has 4 divisors (see below), whose sum is σ = 1906002. Its totient is φ = 635332.

The previous prime is 1270657. The next prime is 1270667. The reversal of 1270666 is 6660721.

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

It can be written as a sum of positive squares in only one way, i.e., 1265625 + 5041 = 1125^2 + 71^2 .

It is a super-3 number, since 3×1270666³ = 6154821793331304888, which contains 333 as substring. Note that it is a super-d number also for d = 2.

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 as a sum of consecutive naturals, namely, 317665 + ... + 317668.

2^1270666 is an apocalyptic number.

1270666 is a deficient number, since it is larger than the sum of its proper divisors (635336).

1270666 is an equidigital number, since it uses as much as digits as its factorization.

1270666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635335.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 1270666 is about 1127.2382179469. The cubic root of 1270666 is about 108.3121399699.

It can be divided in two parts, 1270 and 666, that added together give a square (1936 = 44²).

The spelling of 1270666 in words is "one million, two hundred seventy thousand, six hundred sixty-six".