901687 has 2 divisors, whose sum is σ = 901688. Its totient is φ = 901686.

The previous prime is 901679. The next prime is 901709. The reversal of 901687 is 786109.

It is a weak prime.

It is an emirp because it is prime and its reverse (786109) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 901687 - 2³ = 901679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (901657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450843 + 450844.

It is an arithmetic number, because the mean of its divisors is an integer number (450844).

2⁹⁰¹⁶⁸⁷ is an apocalyptic number.

901687 is a deficient number, since it is larger than the sum of its proper divisors (1).

901687 is an equidigital number, since it uses as much as digits as its factorization.

901687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 901687 is about 949.5720088545. The cubic root of 901687 is about 96.6092260148.

The spelling of 901687 in words is "nine hundred one thousand, six hundred eighty-seven".