991060 has 24 divisors (see below), whose sum is σ = 2378880. Its totient is φ = 339744.

The previous prime is 991057. The next prime is 991063. The reversal of 991060 is 60199.

It is an interprime number because it is at equal distance from previous prime (991057) and next prime (991063).

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3400 + ... + 3679.

It is an arithmetic number, because the mean of its divisors is an integer number (99120).

2⁹⁹¹⁰⁶⁰ is an apocalyptic number.

It is an amenable number.

991060 is an abundant number, since it is smaller than the sum of its proper divisors (1387820).

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

991060 is a wasteful number, since it uses less digits than its factorization.

991060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7095 (or 7093 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 991060 is about 995.5199646416. The cubic root of 991060 is about 99.7011075229.

The spelling of 991060 in words is "nine hundred ninety-one thousand, sixty".