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7680993 = 37136061
BaseRepresentation
bin11101010011001111100001
3112110020100020
4131103033201
53431242433
6432344053
7122200365
oct35231741
915406306
107680993
114376931
1226a5029
13178c188
14103d2a5
15a1acb3
hex7533e1

7680993 has 8 divisors (see below), whose sum is σ = 10385856. Its totient is φ = 5048400.

The previous prime is 7680989. The next prime is 7681007. The reversal of 7680993 is 3990867.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7680993 - 22 = 7680989 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7680973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17818 + ... + 18243.

It is an arithmetic number, because the mean of its divisors is an integer number (1298232).

Almost surely, 27680993 is an apocalyptic number.

It is an amenable number.

7680993 is a deficient number, since it is larger than the sum of its proper divisors (2704863).

7680993 is a wasteful number, since it uses less digits than its factorization.

7680993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36135.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 7680993 is about 2771.4604453248. The cubic root of 7680993 is about 197.3054688737.

The spelling of 7680993 in words is "seven million, six hundred eighty thousand, nine hundred ninety-three".

Divisors: 1 3 71 213 36061 108183 2560331 7680993