986649 has 4 divisors (see below), whose sum is σ = 1315536. Its totient is φ = 657764.

The previous prime is 986641. The next prime is 986659. The reversal of 986649 is 946689.

986649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 986649 - 2³ = 986641 is a prime.

It is a D-number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 986649.

It is not an unprimeable number, because it can be changed into a prime (986641) 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, 164439 + ... + 164444.

It is an arithmetic number, because the mean of its divisors is an integer number (328884).

2⁹⁸⁶⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

986649 is a deficient number, since it is larger than the sum of its proper divisors (328887).

986649 is a wasteful number, since it uses less digits than its factorization.

986649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328886.

The product of its digits is 93312, while the sum is 42.

The square root of 986649 is about 993.3020688592. The cubic root of 986649 is about 99.5529712978.

The spelling of 986649 in words is "nine hundred eighty-six thousand, six hundred forty-nine".