1264401 has 12 divisors (see below), whose sum is σ = 1876212. Its totient is φ = 819936.

The previous prime is 1264387. The next prime is 1264411. The reversal of 1264401 is 1044621.

1264401 is a `hidden beast` number, since 1 + 264 + 401 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 497025 + 767376 = 705^2 + 876^2 .

It is not a de Polignac number, because 1264401 - 2⁶ = 1264337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1264411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1566 + ... + 2231.

It is an arithmetic number, because the mean of its divisors is an integer number (156351).

2^1264401 is an apocalyptic number.

It is an amenable number.

1264401 is a deficient number, since it is larger than the sum of its proper divisors (611811).

1264401 is a wasteful number, since it uses less digits than its factorization.

1264401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3840 (or 3837 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1264401 is about 1124.4558684092. The cubic root of 1264401 is about 108.1338361362.

The spelling of 1264401 in words is "one million, two hundred sixty-four thousand, four hundred one".