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85002661 is a prime number
BaseRepresentation
bin1010001000100…
…00100110100101
312220221120201201
411010100212211
5133230041121
612233522501
72051340112
oct504204645
9186846651
1085002661
1143a88837
1224573431
13147c2443
14b409909
1576e0e91
hex51109a5

85002661 has 2 divisors, whose sum is σ = 85002662. Its totient is φ = 85002660.

The previous prime is 85002629. The next prime is 85002761. The reversal of 85002661 is 16620058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84916225 + 86436 = 9215^2 + 294^2 .

It is a cyclic number.

It is not a de Polignac number, because 85002661 - 25 = 85002629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85002611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42501330 + 42501331.

It is an arithmetic number, because the mean of its divisors is an integer number (42501331).

Almost surely, 285002661 is an apocalyptic number.

It is an amenable number.

85002661 is a deficient number, since it is larger than the sum of its proper divisors (1).

85002661 is an equidigital number, since it uses as much as digits as its factorization.

85002661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 85002661 is about 9219.6887691505. The cubic root of 85002661 is about 439.6875553890.

The spelling of 85002661 in words is "eighty-five million, two thousand, six hundred sixty-one".