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897607680 = 2113561479
BaseRepresentation
bin110101100000000…
…110100000000000
32022120000012020220
4311200012200000
53314241421210
6225022503040
731146353004
oct6540064000
92276005226
10897607680
11420748a32
12210734a80
13113c69808
14872d6704
1553c07c70
hex35806800

897607680 has 192 divisors, whose sum is σ = 2924812800. Its totient is φ = 234946560.

The previous prime is 897607673. The next prime is 897607721. The reversal of 897607680 is 86706798.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (192).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1873681 + ... + 1874159.

It is an arithmetic number, because the mean of its divisors is an integer number (15233400).

Almost surely, 2897607680 is an apocalyptic number.

897607680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 897607680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1462406400).

897607680 is an abundant number, since it is smaller than the sum of its proper divisors (2027205120).

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

897607680 is a wasteful number, since it uses less digits than its factorization.

897607680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570 (or 550 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 51.

The square root of 897607680 is about 29960.1014684530. The cubic root of 897607680 is about 964.6331589976.

The spelling of 897607680 in words is "eight hundred ninety-seven million, six hundred seven thousand, six hundred eighty".