978772 has 12 divisors (see below), whose sum is σ = 1723680. Its totient is φ = 486296.

The previous prime is 978749. The next prime is 978773. The reversal of 978772 is 277879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978773) 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, 33 + ... + 1399.

It is an arithmetic number, because the mean of its divisors is an integer number (143640).

2⁹⁷⁸⁷⁷² is an apocalyptic number.

It is an amenable number.

978772 is a deficient number, since it is larger than the sum of its proper divisors (744908).

978772 is a wasteful number, since it uses less digits than its factorization.

978772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550 (or 1548 counting only the distinct ones).

The product of its digits is 49392, while the sum is 40.

The square root of 978772 is about 989.3290655793. The cubic root of 978772 is about 99.2873331246.

It can be divided in two parts, 97877 and 2, that added together give a palindrome (97879).

The spelling of 978772 in words is "nine hundred seventy-eight thousand, seven hundred seventy-two".