880891643 has 2 divisors, whose sum is σ = 880891644. Its totient is φ = 880891642.

The previous prime is 880891603. The next prime is 880891663. The reversal of 880891643 is 346198088.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 880891643 - 2⁶ = 880891579 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (880891603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440445821 + 440445822.

It is an arithmetic number, because the mean of its divisors is an integer number (440445822).

Almost surely, 2^880891643 is an apocalyptic number.

880891643 is a deficient number, since it is larger than the sum of its proper divisors (1).

880891643 is an equidigital number, since it uses as much as digits as its factorization.

880891643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 47.

The square root of 880891643 is about 29679.8187831395. The cubic root of 880891643 is about 958.6075164025.

The spelling of 880891643 in words is "eight hundred eighty million, eight hundred ninety-one thousand, six hundred forty-three".