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83868673 = 7149191421
BaseRepresentation
bin1001111111110…
…11110000000001
312211210222012011
410333323300001
5132432244143
612153332521
72035605040
oct477736001
9184728164
1083868673
1143383859
1224107141
13144b6245
14b1d2557
157569e9d
hex4ffbc01

83868673 has 16 divisors (see below), whose sum is σ = 97228800. Its totient is φ = 70862400.

The previous prime is 83868661. The next prime is 83868709. The reversal of 83868673 is 37686838.

It is a happy number.

It is not a de Polignac number, because 83868673 - 225 = 50314241 is a prime.

It is a Duffinian number.

Its product of digits (1161216) is a multiple of the sum of its prime divisors (768).

It is not an unprimeable number, because it can be changed into a prime (83868643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199003 + ... + 199423.

It is an arithmetic number, because the mean of its divisors is an integer number (6076800).

Almost surely, 283868673 is an apocalyptic number.

It is an amenable number.

83868673 is a deficient number, since it is larger than the sum of its proper divisors (13360127).

83868673 is a wasteful number, since it uses less digits than its factorization.

83868673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768.

The product of its digits is 1161216, while the sum is 49.

The square root of 83868673 is about 9157.9841122378. The cubic root of 83868673 is about 437.7235611700.

The spelling of 83868673 in words is "eighty-three million, eight hundred sixty-eight thousand, six hundred seventy-three".

Divisors: 1 7 149 191 421 1043 1337 2947 28459 62729 80411 199213 439103 562877 11981239 83868673