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83664131 is a prime number
BaseRepresentation
bin1001111110010…
…01110100000011
312211102120121112
410333021310003
5132404223011
612145113535
72034063515
oct477116403
9184376545
1083664131
1143254111
12240288ab
1314444105
14b17bbb5
15752958b
hex4fc9d03

83664131 has 2 divisors, whose sum is σ = 83664132. Its totient is φ = 83664130.

The previous prime is 83664121. The next prime is 83664137. The reversal of 83664131 is 13146638.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83664131 - 222 = 79469827 is a prime.

It is a super-2 number, since 2×836641312 = 13999373631970322, which contains 22 as substring.

It is equal to p4870553 and since 83664131 and 4870553 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (83664137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41832065 + 41832066.

It is an arithmetic number, because the mean of its divisors is an integer number (41832066).

Almost surely, 283664131 is an apocalyptic number.

83664131 is a deficient number, since it is larger than the sum of its proper divisors (1).

83664131 is an equidigital number, since it uses as much as digits as its factorization.

83664131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 32.

The square root of 83664131 is about 9146.8098810460. The cubic root of 83664131 is about 437.3674260620.

The spelling of 83664131 in words is "eighty-three million, six hundred sixty-four thousand, one hundred thirty-one".