1301687 has 4 divisors (see below), whose sum is σ = 1310136. Its totient is φ = 1293240.

The previous prime is 1301669. The next prime is 1301693. The reversal of 1301687 is 7861031.

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 1301687 - 2¹⁸ = 1039543 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 (1301617) 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, 3989 + ... + 4302.

It is an arithmetic number, because the mean of its divisors is an integer number (327534).

2^1301687 is an apocalyptic number.

1301687 is a deficient number, since it is larger than the sum of its proper divisors (8449).

1301687 is an equidigital number, since it uses as much as digits as its factorization.

1301687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8448.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 1301687 is about 1140.9149836863. The cubic root of 1301687 is about 109.1864776379.

The spelling of 1301687 in words is "one million, three hundred one thousand, six hundred eighty-seven".