890656064 has 56 divisors (see below), whose sum is σ = 1799904960. Its totient is φ = 437197824.

The previous prime is 890656057. The next prime is 890656087. The reversal of 890656064 is 460656098.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1770437 + ... + 1770939.

It is an arithmetic number, because the mean of its divisors is an integer number (32141160).

Almost surely, 2^890656064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 890656064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (899952480).

890656064 is an abundant number, since it is smaller than the sum of its proper divisors (909248896).

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

890656064 is a wasteful number, since it uses less digits than its factorization.

890656064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967 (or 957 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 890656064 is about 29843.8614123575. The cubic root of 890656064 is about 962.1364686390.

The spelling of 890656064 in words is "eight hundred ninety million, six hundred fifty-six thousand, sixty-four".