988666542 has 12 divisors (see below), whose sum is σ = 2142110880. Its totient is φ = 329555508.

The previous prime is 988666541. The next prime is 988666543. The reversal of 988666542 is 245666889.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (988666541) and next prime (988666543).

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (988666541) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27462942 + ... + 27462977.

It is an arithmetic number, because the mean of its divisors is an integer number (178509240).

Almost surely, 2^988666542 is an apocalyptic number.

988666542 is an abundant number, since it is smaller than the sum of its proper divisors (1153444338).

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

988666542 is a wasteful number, since it uses less digits than its factorization.

988666542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54925927 (or 54925924 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The square root of 988666542 is about 31443.0682663127. The cubic root of 988666542 is about 996.2078182019.

The spelling of 988666542 in words is "nine hundred eighty-eight million, six hundred sixty-six thousand, five hundred forty-two".