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BaseRepresentation
bin1111000001010
3101112211
41320022
5221230
655334
731264
oct17012
911484
107690
115861
12454a
133667
142b34
15242a
hex1e0a

7690 has 8 divisors (see below), whose sum is σ = 13860. Its totient is φ = 3072.

The previous prime is 7687. The next prime is 7691. The reversal of 7690 is 967.

7690 = T60 + T61 + ... + T63.

It can be written as a sum of positive squares in 2 ways, for example, as 7569 + 121 = 87^2 + 11^2 .

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

It is a super-2 number, since 2×76902 = 118272200, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (7691) 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, 375 + ... + 394.

27690 is an apocalyptic number.

7690 is a deficient number, since it is larger than the sum of its proper divisors (6170).

7690 is a wasteful number, since it uses less digits than its factorization.

7690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 7690 is about 87.6926450736. The cubic root of 7690 is about 19.7382561170.

The spelling of 7690 in words is "seven thousand, six hundred ninety".

Divisors: 1 2 5 10 769 1538 3845 7690