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76885 = 515377
BaseRepresentation
bin10010110001010101
310220110121
4102301111
54430020
61351541
7440104
oct226125
9126417
1076885
1152846
12385b1
1328cc3
142003b
1517baa
hex12c55

76885 has 4 divisors (see below), whose sum is σ = 92268. Its totient is φ = 61504.

The previous prime is 76883. The next prime is 76907. The reversal of 76885 is 58867.

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

It can be written as a sum of positive squares in 2 ways, for example, as 61009 + 15876 = 247^2 + 126^2 .

It is a cyclic number.

It is not a de Polignac number, because 76885 - 21 = 76883 is a prime.

It is a super-2 number, since 2×768852 = 11822606450, which contains 22 as substring.

It is a Duffinian number.

76885 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 76885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76883) 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, 7684 + ... + 7693.

It is an arithmetic number, because the mean of its divisors is an integer number (23067).

276885 is an apocalyptic number.

It is an amenable number.

76885 is a deficient number, since it is larger than the sum of its proper divisors (15383).

76885 is a wasteful number, since it uses less digits than its factorization.

76885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15382.

The product of its digits is 13440, while the sum is 34.

The square root of 76885 is about 277.2814454665. The cubic root of 76885 is about 42.5220185790.

It can be divided in two parts, 76 and 885, that added together give a square (961 = 312).

The spelling of 76885 in words is "seventy-six thousand, eight hundred eighty-five".

Divisors: 1 5 15377 76885