988761 has 4 divisors (see below), whose sum is σ = 1318352. Its totient is φ = 659172.

The previous prime is 988759. The next prime is 988763. The reversal of 988761 is 167889.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (988759) and next prime (988763).

It is not a de Polignac number, because 988761 - 2¹ = 988759 is a prime.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 988761.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164791 + ... + 164796.

It is an arithmetic number, because the mean of its divisors is an integer number (329588).

2⁹⁸⁸⁷⁶¹ is an apocalyptic number.

It is an amenable number.

988761 is a deficient number, since it is larger than the sum of its proper divisors (329591).

988761 is a wasteful number, since it uses less digits than its factorization.

988761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329590.

The product of its digits is 24192, while the sum is 39.

The square root of 988761 is about 994.3646212532. The cubic root of 988761 is about 99.6239543358.

The spelling of 988761 in words is "nine hundred eighty-eight thousand, seven hundred sixty-one".