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716868 = 223219913
BaseRepresentation
bin10101111000001000100
31100102100200
42233001010
5140414433
623210500
76043665
oct2570104
91312320
10716868
1144a659
122a6a30
131c13a9
1414936c
15e2613
hexaf044

716868 has 18 divisors (see below), whose sum is σ = 1812174. Its totient is φ = 238944.

The previous prime is 716861. The next prime is 716869. The reversal of 716868 is 868617.

It can be written as a sum of positive squares in only one way, i.e., 412164 + 304704 = 642^2 + 552^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 19913 = 716868 / (7 + 1 + 6 + 8 + 6 + 8).

It is not an unprimeable number, because it can be changed into a prime (716861) by changing a digit.

716868 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9921 + ... + 9992.

2716868 is an apocalyptic number.

It is an amenable number.

716868 is an abundant number, since it is smaller than the sum of its proper divisors (1095306).

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

716868 is a wasteful number, since it uses less digits than its factorization.

716868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19923 (or 19918 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 716868 is about 846.6805773135. The cubic root of 716868 is about 89.4979452937.

The spelling of 716868 in words is "seven hundred sixteen thousand, eight hundred sixty-eight".