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7688013 = 34361977
BaseRepresentation
bin11101010100111101001101
3112110120222020
4131110331031
53432004023
6432440353
7122230014
oct35247515
915416866
107688013
114381133
1226a90b9
131792428
141041a7b
15a1cde3
hex754f4d

7688013 has 16 divisors (see below), whose sum is σ = 10671936. Its totient is φ = 4919040.

The previous prime is 7688011. The next prime is 7688017. The reversal of 7688013 is 3108867.

It is not a de Polignac number, because 7688013 - 21 = 7688011 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7688011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7381 + ... + 8357.

It is an arithmetic number, because the mean of its divisors is an integer number (666996).

Almost surely, 27688013 is an apocalyptic number.

It is an amenable number.

7688013 is a deficient number, since it is larger than the sum of its proper divisors (2983923).

7688013 is a wasteful number, since it uses less digits than its factorization.

7688013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 7688013 is about 2772.7266363636. The cubic root of 7688013 is about 197.3655593091.

The spelling of 7688013 in words is "seven million, six hundred eighty-eight thousand, thirteen".

Divisors: 1 3 43 61 129 183 977 2623 2931 7869 42011 59597 126033 178791 2562671 7688013