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83001685 = 5131276949
BaseRepresentation
bin1001111001010…
…00000101010101
312210011220220111
410330220011111
5132222023220
612123003021
72025334264
oct474500525
9183156814
1083001685
1142941438
1223969471
1314271730
14b0485db
15744815a
hex4f28155

83001685 has 8 divisors (see below), whose sum is σ = 107263800. Its totient is φ = 61293504.

The previous prime is 83001679. The next prime is 83001697. The reversal of 83001685 is 58610038.

It can be written as a sum of positive squares in 4 ways, for example, as 19989841 + 63011844 = 4471^2 + 7938^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 83001685 - 29 = 83001173 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638410 + ... + 638539.

It is an arithmetic number, because the mean of its divisors is an integer number (13407975).

Almost surely, 283001685 is an apocalyptic number.

It is an amenable number.

83001685 is a deficient number, since it is larger than the sum of its proper divisors (24262115).

83001685 is a wasteful number, since it uses less digits than its factorization.

83001685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276967.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 83001685 is about 9110.5260550640. The cubic root of 83001685 is about 436.2100189685.

The spelling of 83001685 in words is "eighty-three million, one thousand, six hundred eighty-five".

Divisors: 1 5 13 65 1276949 6384745 16600337 83001685