991062 has 16 divisors (see below), whose sum is σ = 2202480. Its totient is φ = 330336.

The previous prime is 991057. The next prime is 991063. The reversal of 991062 is 260199.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (991063) 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 7 ways as a sum of consecutive naturals, for example, 9123 + ... + 9230.

It is an arithmetic number, because the mean of its divisors is an integer number (137655).

2⁹⁹¹⁰⁶² is an apocalyptic number.

991062 is an abundant number, since it is smaller than the sum of its proper divisors (1211418).

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

991062 is a wasteful number, since it uses less digits than its factorization.

991062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18364 (or 18358 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 991062 is about 995.5209691413. The cubic root of 991062 is about 99.7011745899.

The spelling of 991062 in words is "nine hundred ninety-one thousand, sixty-two".