988766 has 4 divisors (see below), whose sum is σ = 1483152. Its totient is φ = 494382.

The previous prime is 988763. The next prime is 988783. The reversal of 988766 is 667889.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 667889 = 61 ⋅10949.

It is a nialpdrome in base 10.

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 988766.

It is not an unprimeable number, because it can be changed into a prime (988763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247190 + ... + 247193.

It is an arithmetic number, because the mean of its divisors is an integer number (370788).

2⁹⁸⁸⁷⁶⁶ is an apocalyptic number.

988766 is a deficient number, since it is larger than the sum of its proper divisors (494386).

988766 is a wasteful number, since it uses less digits than its factorization.

988766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494385.

The product of its digits is 145152, while the sum is 44.

The square root of 988766 is about 994.3671354183. The cubic root of 988766 is about 99.6241222628.

The spelling of 988766 in words is "nine hundred eighty-eight thousand, seven hundred sixty-six".