10820001 has 8 divisors (see below), whose sum is σ = 14474304. Its totient is φ = 7189520.

The previous prime is 10819979. The next prime is 10820009. The reversal of 10820001 is 10002801.

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 10820001 - 2⁶ = 10819937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10820009) 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, 4866 + ... + 6731.

It is an arithmetic number, because the mean of its divisors is an integer number (1809288).

Almost surely, 2^10820001 is an apocalyptic number.

It is an amenable number.

10820001 is a deficient number, since it is larger than the sum of its proper divisors (3654303).

10820001 is a wasteful number, since it uses less digits than its factorization.

10820001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11911.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 10820001 is about 3289.3769926842. The cubic root of 10820001 is about 221.1782582042.

Adding to 10820001 its reverse (10002801), we get a palindrome (20822802).

The spelling of 10820001 in words is "ten million, eight hundred twenty thousand, one".