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87087077 = 7116118541
BaseRepresentation
bin1010011000011…
…01011111100101
320001212111000022
411030031133211
5134243241302
612350324525
72105141120
oct514153745
9201774008
1087087077
11451818a0
12251b9745
131507211c
14b7cd3b7
1579a38a2
hex530d7e5

87087077 has 16 divisors (see below), whose sum is σ = 110361984. Its totient is φ = 66744000.

The previous prime is 87087043. The next prime is 87087079. The reversal of 87087077 is 77078078.

It is a cyclic number.

It is not a de Polignac number, because 87087077 - 214 = 87070693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87087079) 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, 4574 + ... + 13967.

It is an arithmetic number, because the mean of its divisors is an integer number (6897624).

Almost surely, 287087077 is an apocalyptic number.

It is an amenable number.

87087077 is a deficient number, since it is larger than the sum of its proper divisors (23274907).

87087077 is a wasteful number, since it uses less digits than its factorization.

87087077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18620.

The product of its (nonzero) digits is 153664, while the sum is 44.

The square root of 87087077 is about 9332.0457028457. The cubic root of 87087077 is about 443.2525451875.

The spelling of 87087077 in words is "eighty-seven million, eighty-seven thousand, seventy-seven".

Divisors: 1 7 11 61 77 427 671 4697 18541 129787 203951 1131001 1427657 7917007 12441011 87087077