Base | Representation |
---|---|
bin | 1010011101000… |
… | …11010110100101 |
3 | 20010000200000112 |
4 | 11032203112211 |
5 | 134422412101 |
6 | 12411422405 |
7 | 2113305521 |
oct | 516432645 |
9 | 203020015 |
10 | 87700901 |
11 | 45560a92 |
12 | 25454a05 |
13 | 15228632 |
14 | b90cd81 |
15 | 7a756bb |
hex | 53a35a5 |
87700901 has 8 divisors (see below), whose sum is σ = 91663320. Its totient is φ = 83801088.
The previous prime is 87700853. The next prime is 87700933. The reversal of 87700901 is 10900778.
It can be written as a sum of positive squares in 4 ways, for example, as 21669025 + 66031876 = 4655^2 + 8126^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 87700901 - 214 = 87684517 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (87700801) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12776 + ... + 18401.
It is an arithmetic number, because the mean of its divisors is an integer number (11457915).
Almost surely, 287700901 is an apocalyptic number.
It is an amenable number.
87700901 is a deficient number, since it is larger than the sum of its proper divisors (3962419).
87700901 is a wasteful number, since it uses less digits than its factorization.
87700901 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 31303.
The product of its (nonzero) digits is 3528, while the sum is 32.
The square root of 87700901 is about 9364.8759201604. The cubic root of 87700901 is about 444.2915141175.
The spelling of 87700901 in words is "eighty-seven million, seven hundred thousand, nine hundred one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.067 sec. • engine limits •