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90645 = 356043
BaseRepresentation
bin10110001000010101
311121100020
4112020111
510400040
61535353
7525162
oct261025
9147306
1090645
1162115
1244559
1332349
1425069
151bcd0
hex16215

90645 has 8 divisors (see below), whose sum is σ = 145056. Its totient is φ = 48336.

The previous prime is 90641. The next prime is 90647. The reversal of 90645 is 54609.

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

It is not a de Polignac number, because 90645 - 22 = 90641 is a prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3007 + ... + 3036.

It is an arithmetic number, because the mean of its divisors is an integer number (18132).

290645 is an apocalyptic number.

It is an amenable number.

90645 is a deficient number, since it is larger than the sum of its proper divisors (54411).

90645 is a wasteful number, since it uses less digits than its factorization.

90645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6051.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 90645 is about 301.0730808292. The cubic root of 90645 is about 44.9208485147.

The spelling of 90645 in words is "ninety thousand, six hundred forty-five".

Divisors: 1 3 5 15 6043 18129 30215 90645