10620881 has 2 divisors, whose sum is σ = 10620882. Its totient is φ = 10620880.

The previous prime is 10620877. The next prime is 10620889. The reversal of 10620881 is 18802601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10137856 + 483025 = 3184^2 + 695^2 .

It is an emirp because it is prime and its reverse (18802601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10620881 - 2² = 10620877 is a prime.

It is a super-2 number, since 2×10620881² = 225606226432322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10620881.

It is not a weakly prime, because it can be changed into another prime (10620889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5310440 + 5310441.

It is an arithmetic number, because the mean of its divisors is an integer number (5310441).

Almost surely, 2^10620881 is an apocalyptic number.

It is an amenable number.

10620881 is a deficient number, since it is larger than the sum of its proper divisors (1).

10620881 is an equidigital number, since it uses as much as digits as its factorization.

10620881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 10620881 is about 3258.9693155966. The cubic root of 10620881 is about 219.8130712436.

The spelling of 10620881 in words is "ten million, six hundred twenty thousand, eight hundred eighty-one".