920821067 has 8 divisors (see below), whose sum is σ = 934687824. Its totient is φ = 907054848.

The previous prime is 920821037. The next prime is 920821087. The reversal of 920821067 is 760128029.

It is a happy number.

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 920821067 - 2⁶ = 920821003 is a prime.

It is a super-2 number, since 2×920821067² = 1695822874862036978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (920821037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6578 + ... + 43415.

It is an arithmetic number, because the mean of its divisors is an integer number (116835978).

Almost surely, 2^920821067 is an apocalyptic number.

920821067 is a deficient number, since it is larger than the sum of its proper divisors (13866757).

920821067 is a wasteful number, since it uses less digits than its factorization.

920821067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50269.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 920821067 is about 30345.0336463811. The cubic root of 920821067 is about 972.8780737353.

The spelling of 920821067 in words is "nine hundred twenty million, eight hundred twenty-one thousand, sixty-seven".