996821261 has 8 divisors (see below), whose sum is σ = 1023314304. Its totient is φ = 970548480.

The previous prime is 996821257. The next prime is 996821269. The reversal of 996821261 is 162128699.

996821261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 996821261 - 2² = 996821257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (996821269) 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, 45875 + ... + 64016.

It is an arithmetic number, because the mean of its divisors is an integer number (127914288).

Almost surely, 2^996821261 is an apocalyptic number.

It is an amenable number.

996821261 is a deficient number, since it is larger than the sum of its proper divisors (26493043).

996821261 is a wasteful number, since it uses less digits than its factorization.

996821261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110131.

The product of its digits is 93312, while the sum is 44.

The square root of 996821261 is about 31572.4763203649. The cubic root of 996821261 is about 998.9392956374.

The spelling of 996821261 in words is "nine hundred ninety-six million, eight hundred twenty-one thousand, two hundred sixty-one".