986957 has 4 divisors (see below), whose sum is σ = 1021020. Its totient is φ = 952896.

The previous prime is 986941. The next prime is 986959. The reversal of 986957 is 759689.

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

It can be written as a sum of positive squares in 2 ways, for example, as 609961 + 376996 = 781^2 + 614^2 .

It is a cyclic number.

It is not a de Polignac number, because 986957 - 2⁴ = 986941 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 986957.

It is not an unprimeable number, because it can be changed into a prime (986959) 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, 16988 + ... + 17045.

It is an arithmetic number, because the mean of its divisors is an integer number (255255).

2⁹⁸⁶⁹⁵⁷ is an apocalyptic number.

It is an amenable number.

986957 is a deficient number, since it is larger than the sum of its proper divisors (34063).

986957 is a wasteful number, since it uses less digits than its factorization.

986957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34062.

The product of its digits is 136080, while the sum is 44.

The square root of 986957 is about 993.4570951984. The cubic root of 986957 is about 99.5633292958.

The spelling of 986957 in words is "nine hundred eighty-six thousand, nine hundred fifty-seven".