6884645490 has 64 divisors (see below), whose sum is σ = 18387388800. Its totient is φ = 1833072192.

The previous prime is 6884645479. The next prime is 6884645527. The reversal of 6884645490 is 945464886.

6884645490 is a `hidden beast` number, since 68 + 8 + 46 + 454 + 90 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158584 + ... + 197276.

It is an arithmetic number, because the mean of its divisors is an integer number (287302950).

Almost surely, 2^6884645490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6884645490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9193694400).

6884645490 is an abundant number, since it is smaller than the sum of its proper divisors (11502743310).

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

6884645490 is a wasteful number, since it uses less digits than its factorization.

6884645490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39368 (or 39362 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 54.

The square root of 6884645490 is about 82973.7638654533. The cubic root of 6884645490 is about 1902.3650594447.

The spelling of 6884645490 in words is "six billion, eight hundred eighty-four million, six hundred forty-five thousand, four hundred ninety".