999652 has 12 divisors (see below), whose sum is σ = 1771056. Its totient is φ = 493640.

The previous prime is 999631. The next prime is 999653. The reversal of 999652 is 256999.

It is a super-2 number, since 2×999652² = 1998608242208, which contains 22 as substring.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (999653) by changing a digit.

999652 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1174 + ... + 1837.

It is an arithmetic number, because the mean of its divisors is an integer number (147588).

2⁹⁹⁹⁶⁵² is an apocalyptic number.

It is an amenable number.

999652 is a deficient number, since it is larger than the sum of its proper divisors (771404).

999652 is a wasteful number, since it uses less digits than its factorization.

999652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3098 (or 3096 counting only the distinct ones).

The product of its digits is 43740, while the sum is 40.

The square root of 999652 is about 999.8259848594. The cubic root of 999652 is about 99.9883986541.

The spelling of 999652 in words is "nine hundred ninety-nine thousand, six hundred fifty-two".