1264655 has 16 divisors (see below), whose sum is σ = 1810944. Its totient is φ = 828960.

The previous prime is 1264651. The next prime is 1264657. The reversal of 1264655 is 5564621.

It is not a de Polignac number, because 1264655 - 2² = 1264651 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20 + ... + 1590.

It is an arithmetic number, because the mean of its divisors is an integer number (113184).

2^1264655 is an apocalyptic number.

1264655 is a deficient number, since it is larger than the sum of its proper divisors (546289).

1264655 is a wasteful number, since it uses less digits than its factorization.

1264655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1606.

The product of its digits is 7200, while the sum is 29.

The square root of 1264655 is about 1124.5688062542. The cubic root of 1264655 is about 108.1410764963.

The spelling of 1264655 in words is "one million, two hundred sixty-four thousand, six hundred fifty-five".