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77796085 = 517986923
BaseRepresentation
bin1001010001100…
…01001011110101
312102101110011111
410220301023311
5124403433320
611415235021
71633153513
oct450611365
9172343144
1077796085
113aa06394
1222078a71
131316b1b3
14a4914b3
156c6aa5a
hex4a312f5

77796085 has 8 divisors (see below), whose sum is σ = 93877920. Its totient is φ = 61888464.

The previous prime is 77796083. The next prime is 77796157. The reversal of 77796085 is 58069777.

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 77796085 - 21 = 77796083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77796083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42567 + ... + 44356.

It is an arithmetic number, because the mean of its divisors is an integer number (11734740).

Almost surely, 277796085 is an apocalyptic number.

It is an amenable number.

77796085 is a deficient number, since it is larger than the sum of its proper divisors (16081835).

77796085 is a wasteful number, since it uses less digits than its factorization.

77796085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87107.

The product of its (nonzero) digits is 740880, while the sum is 49.

The square root of 77796085 is about 8820.2088977529. The cubic root of 77796085 is about 426.8932102456.

The spelling of 77796085 in words is "seventy-seven million, seven hundred ninety-six thousand, eighty-five".

Divisors: 1 5 179 895 86923 434615 15559217 77796085