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5723438661 = 32635937629
BaseRepresentation
bin1010101010010010…
…01011111001000101
3112202212122210211200
411111021023321011
543210200014121
62343533053113
7261555266043
oct52511137105
915685583750
105723438661
1124778061a6
121138927199
137029b65c5
143c41bb393
15237708a26
hex15524be45

5723438661 has 6 divisors (see below), whose sum is σ = 8267189190. Its totient is φ = 3815625768.

The previous prime is 5723438641. The next prime is 5723438663. The reversal of 5723438661 is 1668343275.

It can be written as a sum of positive squares in only one way, i.e., 4718865636 + 1004573025 = 68694^2 + 31695^2 .

It is not a de Polignac number, because 5723438661 - 26 = 5723438597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5723438663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 317968806 + ... + 317968823.

It is an arithmetic number, because the mean of its divisors is an integer number (1377864865).

Almost surely, 25723438661 is an apocalyptic number.

It is an amenable number.

5723438661 is a deficient number, since it is larger than the sum of its proper divisors (2543750529).

5723438661 is a wasteful number, since it uses less digits than its factorization.

5723438661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635937635 (or 635937632 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 5723438661 is about 75653.4114300208. The cubic root of 5723438661 is about 1788.7611103242.

The spelling of 5723438661 in words is "five billion, seven hundred twenty-three million, four hundred thirty-eight thousand, six hundred sixty-one".

Divisors: 1 3 9 635937629 1907812887 5723438661