1272661 has 8 divisors (see below), whose sum is σ = 1379840. Its totient is φ = 1166832.

The previous prime is 1272653. The next prime is 1272673. The reversal of 1272661 is 1662721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1272661 - 2³ = 1272653 is a prime.

It is a super-3 number, since 3×1272661³ = 6183857333554022343, which contains 333 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2680 + ... + 3118.

It is an arithmetic number, because the mean of its divisors is an integer number (172480).

2^1272661 is an apocalyptic number.

It is an amenable number.

1272661 is a deficient number, since it is larger than the sum of its proper divisors (107179).

1272661 is a wasteful number, since it uses less digits than its factorization.

1272661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675.

The product of its digits is 1008, while the sum is 25.

The square root of 1272661 is about 1128.1227770061. The cubic root of 1272661 is about 108.3687952282.

The spelling of 1272661 in words is "one million, two hundred seventy-two thousand, six hundred sixty-one".