980649 has 6 divisors (see below), whose sum is σ = 1416506. Its totient is φ = 653760.

The previous prime is 980641. The next prime is 980677. The reversal of 980649 is 946089.

980649 is a `hidden beast` number, since 9 + 8 + 0 + 649 = 666.

It can be written as a sum of positive squares in only one way, i.e., 921600 + 59049 = 960^2 + 243^2 .

It is not a de Polignac number, because 980649 - 2³ = 980641 is a prime.

It is a super-2 number, since 2×980649² = 1923344922402, which contains 22 as substring.

It is a Duffinian number.

980649 is a lucky 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 980649.

It is not an unprimeable number, because it can be changed into a prime (980641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54472 + ... + 54489.

2⁹⁸⁰⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

980649 is a deficient number, since it is larger than the sum of its proper divisors (435857).

980649 is a wasteful number, since it uses less digits than its factorization.

980649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108967 (or 108964 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 980649 is about 990.2772339098. The cubic root of 980649 is about 99.3507606717.

The spelling of 980649 in words is "nine hundred eighty thousand, six hundred forty-nine".