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83220065 = 516644013
BaseRepresentation
bin1001111010111…
…01011001100001
312210121000110122
410331131121201
5132301020230
612131410025
72030234045
oct475353141
9183530418
1083220065
1142a80515
1223a53915
1314319c56
14b0a4025
15748cbe5
hex4f5d661

83220065 has 4 divisors (see below), whose sum is σ = 99864084. Its totient is φ = 66576048.

The previous prime is 83220047. The next prime is 83220079. The reversal of 83220065 is 56002238.

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 38651089 + 44568976 = 6217^2 + 6676^2 .

It is a cyclic number.

It is not a de Polignac number, because 83220065 - 26 = 83220001 is a prime.

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, 8322002 + ... + 8322011.

It is an arithmetic number, because the mean of its divisors is an integer number (24966021).

Almost surely, 283220065 is an apocalyptic number.

It is an amenable number.

83220065 is a deficient number, since it is larger than the sum of its proper divisors (16644019).

83220065 is a wasteful number, since it uses less digits than its factorization.

83220065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16644018.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 83220065 is about 9122.5032200597. The cubic root of 83220065 is about 436.5922446315.

The spelling of 83220065 in words is "eighty-three million, two hundred twenty thousand, sixty-five".

Divisors: 1 5 16644013 83220065