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89621 = 723159
BaseRepresentation
bin10101111000010101
311112221022
4111320111
510331441
61530525
7522200
oct257025
9145838
1089621
1161374
1243a45
1331a3c
1424937
151b84b
hex15e15

89621 has 12 divisors (see below), whose sum is σ = 109440. Its totient is φ = 73080.

The previous prime is 89611. The next prime is 89627. The reversal of 89621 is 12698.

It is not a de Polignac number, because 89621 - 214 = 73237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 7.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 89621.

It is not an unprimeable number, because it can be changed into a prime (89627) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1490 + ... + 1548.

It is an arithmetic number, because the mean of its divisors is an integer number (9120).

289621 is an apocalyptic number.

It is an amenable number.

89621 is a deficient number, since it is larger than the sum of its proper divisors (19819).

89621 is a wasteful number, since it uses less digits than its factorization.

89621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104 (or 97 counting only the distinct ones).

The product of its digits is 864, while the sum is 26.

The square root of 89621 is about 299.3676669248. The cubic root of 89621 is about 44.7510533131.

The spelling of 89621 in words is "eighty-nine thousand, six hundred twenty-one".

Divisors: 1 7 31 49 59 217 413 1519 1829 2891 12803 89621