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90715 = 518143
BaseRepresentation
bin10110001001011011
311121102211
4112021123
510400330
61535551
7525322
oct261133
9147384
1090715
1162179
12445b7
13323a1
14250b9
151bd2a
hex1625b

90715 has 4 divisors (see below), whose sum is σ = 108864. Its totient is φ = 72568.

The previous prime is 90709. The next prime is 90731. The reversal of 90715 is 51709.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90715 - 29 = 90203 is a prime.

It is a super-2 number, since 2×907152 = 16458422450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9067 + ... + 9076.

It is an arithmetic number, because the mean of its divisors is an integer number (27216).

290715 is an apocalyptic number.

90715 is a deficient number, since it is larger than the sum of its proper divisors (18149).

90715 is a wasteful number, since it uses less digits than its factorization.

90715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18148.

The product of its (nonzero) digits is 315, while the sum is 22.

The square root of 90715 is about 301.1893092392. The cubic root of 90715 is about 44.9324088152.

The spelling of 90715 in words is "ninety thousand, seven hundred fifteen".

Divisors: 1 5 18143 90715