976663 has 4 divisors (see below), whose sum is σ = 978880. Its totient is φ = 974448.

The previous prime is 976643. The next prime is 976669. The reversal of 976663 is 366679.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366679 = 73 ⋅5023.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-976663 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (976669) 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 3 ways as a sum of consecutive naturals, for example, 198 + ... + 1411.

It is an arithmetic number, because the mean of its divisors is an integer number (244720).

2⁹⁷⁶⁶⁶³ is an apocalyptic number.

976663 is a deficient number, since it is larger than the sum of its proper divisors (2217).

976663 is a wasteful number, since it uses less digits than its factorization.

976663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2216.

The product of its digits is 40824, while the sum is 37.

The square root of 976663 is about 988.2626169192. The cubic root of 976663 is about 99.2159690191.

The spelling of 976663 in words is "nine hundred seventy-six thousand, six hundred sixty-three".