881343645 has 64 divisors (see below), whose sum is σ = 1771123200. Its totient is φ = 371879424.

The previous prime is 881343643. The next prime is 881343653. The reversal of 881343645 is 546343188.

It is not a de Polignac number, because 881343645 - 2¹ = 881343643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 881343597 and 881343606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (881343643) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 60297 + ... + 73473.

It is an arithmetic number, because the mean of its divisors is an integer number (27673800).

Almost surely, 2^881343645 is an apocalyptic number.

It is an amenable number.

881343645 is an abundant number, since it is smaller than the sum of its proper divisors (889779555).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

881343645 is a wasteful number, since it uses less digits than its factorization.

881343645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13219 (or 13205 counting only the distinct ones).

The product of its digits is 276480, while the sum is 42.

The square root of 881343645 is about 29687.4324420284. The cubic root of 881343645 is about 958.7714481902.

The spelling of 881343645 in words is "eight hundred eighty-one million, three hundred forty-three thousand, six hundred forty-five".