978763 has 4 divisors (see below), whose sum is σ = 1010368. Its totient is φ = 947160.

The previous prime is 978749. The next prime is 978773. The reversal of 978763 is 367879.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-978763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (978713) 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, 15756 + ... + 15817.

It is an arithmetic number, because the mean of its divisors is an integer number (252592).

2⁹⁷⁸⁷⁶³ is an apocalyptic number.

978763 is a deficient number, since it is larger than the sum of its proper divisors (31605).

978763 is a wasteful number, since it uses less digits than its factorization.

978763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31604.

The product of its digits is 63504, while the sum is 40.

The square root of 978763 is about 989.3245170317. The cubic root of 978763 is about 99.2870288015.

It can be divided in two parts, 97876 and 3, that added together give a palindrome (97879).

The spelling of 978763 in words is "nine hundred seventy-eight thousand, seven hundred sixty-three".