988708701690 has 24 divisors (see below), whose sum is σ = 2570642624628. Its totient is φ = 263655653760.

The previous prime is 988708701689. The next prime is 988708701707. The reversal of 988708701690 is 96107807889.

It can be written as a sum of positive squares in 2 ways, for example, as 944708185521 + 44000516169 = 971961^2 + 209763^2 .

It is a super-2 number, since 2×988708701690² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5492826031 + ... + 5492826210.

Almost surely, 2^988708701690 is an apocalyptic number.

988708701690 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

988708701690 is an abundant number, since it is smaller than the sum of its proper divisors (1581933922938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

988708701690 is a wasteful number, since it uses less digits than its factorization.

988708701690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10985652254 (or 10985652251 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 63.

The spelling of 988708701690 in words is "nine hundred eighty-eight billion, seven hundred eight million, seven hundred one thousand, six hundred ninety".