881667990 has 160 divisors (see below), whose sum is σ = 2732361984. Its totient is φ = 199817280.

The previous prime is 881667959. The next prime is 881668019. The reversal of 881667990 is 99766188.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 742177 + ... + 743363.

Almost surely, 2^881667990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 881667990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1366180992).

881667990 is an abundant number, since it is smaller than the sum of its proper divisors (1850693994).

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

881667990 is a wasteful number, since it uses less digits than its factorization.

881667990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344 (or 1335 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The square root of 881667990 is about 29692.8946046020. The cubic root of 881667990 is about 958.8890468847.

The spelling of 881667990 in words is "eight hundred eighty-one million, six hundred sixty-seven thousand, nine hundred ninety".