1254664 has 8 divisors (see below), whose sum is σ = 2352510. Its totient is φ = 627328.

The previous prime is 1254661. The next prime is 1254667. The reversal of 1254664 is 4664521.

It is an interprime number because it is at equal distance from previous prime (1254661) and next prime (1254667).

It can be written as a sum of positive squares in only one way, i.e., 1188100 + 66564 = 1090^2 + 258^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1254661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78409 + ... + 78424.

2^1254664 is an apocalyptic number.

It is an amenable number.

1254664 is a deficient number, since it is larger than the sum of its proper divisors (1097846).

1254664 is a wasteful number, since it uses less digits than its factorization.

1254664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156839 (or 156835 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 1254664 is about 1120.1178509425. The cubic root of 1254664 is about 107.8555453263.

The spelling of 1254664 in words is "one million, two hundred fifty-four thousand, six hundred sixty-four".