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7087 = 19373
BaseRepresentation
bin1101110101111
3100201111
41232233
5211322
652451
726443
oct15657
910644
107087
115363
124127
1332c2
142823
152177
hex1baf

7087 has 4 divisors (see below), whose sum is σ = 7480. Its totient is φ = 6696.

The previous prime is 7079. The next prime is 7103. The reversal of 7087 is 7807.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7807 = 37211.

It is a cyclic number.

It is not a de Polignac number, because 7087 - 23 = 7079 is a prime.

It is a Duffinian number.

7087 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7027) 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, 168 + ... + 205.

It is an arithmetic number, because the mean of its divisors is an integer number (1870).

27087 is an apocalyptic number.

7087 is a deficient number, since it is larger than the sum of its proper divisors (393).

7087 is a wasteful number, since it uses less digits than its factorization.

7087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 7087 is about 84.1843215807. The cubic root of 7087 is about 19.2082357608.

The spelling of 7087 in words is "seven thousand, eighty-seven".

Divisors: 1 19 373 7087