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130087697 = 1011287997
BaseRepresentation
bin1111100000011…
…11101100010001
3100001210010202212
413300033230101
5231300301242
620524121505
73136504265
oct760175421
9301703685
10130087697
11674818a3
1237696295
1320c4968c
14133c40a5
15b649782
hex7c0fb11

130087697 has 4 divisors (see below), whose sum is σ = 131375796. Its totient is φ = 128799600.

The previous prime is 130087673. The next prime is 130087739. The reversal of 130087697 is 796780031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 796780031 = 1597498923.

It can be written as a sum of positive squares in 2 ways, for example, as 125798656 + 4289041 = 11216^2 + 2071^2 .

It is a cyclic number.

It is not a de Polignac number, because 130087697 - 216 = 130022161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130087627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 643898 + ... + 644099.

It is an arithmetic number, because the mean of its divisors is an integer number (32843949).

Almost surely, 2130087697 is an apocalyptic number.

It is an amenable number.

130087697 is a deficient number, since it is larger than the sum of its proper divisors (1288099).

130087697 is a wasteful number, since it uses less digits than its factorization.

130087697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288098.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 130087697 is about 11405.5993704847. The cubic root of 130087697 is about 506.6935878951.

The spelling of 130087697 in words is "one hundred thirty million, eighty-seven thousand, six hundred ninety-seven".

Divisors: 1 101 1287997 130087697