881258621 has 2 divisors, whose sum is σ = 881258622. Its totient is φ = 881258620.

The previous prime is 881258611. The next prime is 881258659. The reversal of 881258621 is 126852188.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 881258596 + 25 = 29686^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 881258621 - 2⁶ = 881258557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (881258611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440629310 + 440629311.

It is an arithmetic number, because the mean of its divisors is an integer number (440629311).

Almost surely, 2^881258621 is an apocalyptic number.

It is an amenable number.

881258621 is a deficient number, since it is larger than the sum of its proper divisors (1).

881258621 is an equidigital number, since it uses as much as digits as its factorization.

881258621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61440, while the sum is 41.

The square root of 881258621 is about 29686.0004210739. Note that the first 3 decimals coincide. The cubic root of 881258621 is about 958.7406160226.

The spelling of 881258621 in words is "eight hundred eighty-one million, two hundred fifty-eight thousand, six hundred twenty-one".