913687 has 2 divisors, whose sum is σ = 913688. Its totient is φ = 913686.

The previous prime is 913639. The next prime is 913709. The reversal of 913687 is 786319.

It is a strong prime.

It is an emirp because it is prime and its reverse (786319) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 913687 - 2¹⁹ = 389399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (913637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456843 + 456844.

It is an arithmetic number, because the mean of its divisors is an integer number (456844).

2⁹¹³⁶⁸⁷ is an apocalyptic number.

913687 is a deficient number, since it is larger than the sum of its proper divisors (1).

913687 is an equidigital number, since it uses as much as digits as its factorization.

913687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 34.

The square root of 913687 is about 955.8697610030. The cubic root of 913687 is about 97.0359097568.

It can be divided in two parts, 913 and 687, that added together give a square (1600 = 40²).

The spelling of 913687 in words is "nine hundred thirteen thousand, six hundred eighty-seven".