1252687 has 4 divisors (see below), whose sum is σ = 1255176. Its totient is φ = 1250200.

The previous prime is 1252681. The next prime is 1252711. The reversal of 1252687 is 7862521.

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

It is a cyclic number.

It is not a de Polignac number, because 1252687 - 2¹⁵ = 1219919 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 (1252681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193 + ... + 1594.

It is an arithmetic number, because the mean of its divisors is an integer number (313794).

2^1252687 is an apocalyptic number.

1252687 is a deficient number, since it is larger than the sum of its proper divisors (2489).

1252687 is an equidigital number, since it uses as much as digits as its factorization.

1252687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2488.

The product of its digits is 6720, while the sum is 31.

The square root of 1252687 is about 1119.2350066005. The cubic root of 1252687 is about 107.7988654745.

The spelling of 1252687 in words is "one million, two hundred fifty-two thousand, six hundred eighty-seven".