991652 has 6 divisors (see below), whose sum is σ = 1735398. Its totient is φ = 495824.

The previous prime is 991651. The next prime is 991663. The reversal of 991652 is 256199.

It can be written as a sum of positive squares in only one way, i.e., 614656 + 376996 = 784^2 + 614^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 991652.

It is not an unprimeable number, because it can be changed into a prime (991651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123953 + ... + 123960.

It is an arithmetic number, because the mean of its divisors is an integer number (289233).

2⁹⁹¹⁶⁵² is an apocalyptic number.

It is an amenable number.

991652 is a deficient number, since it is larger than the sum of its proper divisors (743746).

991652 is a wasteful number, since it uses less digits than its factorization.

991652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247917 (or 247915 counting only the distinct ones).

The product of its digits is 4860, while the sum is 32.

The square root of 991652 is about 995.8172523109. The cubic root of 991652 is about 99.7209553987.

The spelling of 991652 in words is "nine hundred ninety-one thousand, six hundred fifty-two".