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86610969 = 32371991307
BaseRepresentation
bin1010010100110…
…01010000011001
320000222021220200
411022121100121
5134133022334
612332212413
72101116054
oct512312031
9200867820
1086610969
1144987115
122500a109
1314c364c3
14b707a9b
15790c799
hex5299419

86610969 has 24 divisors (see below), whose sum is σ = 129230400. Its totient is φ = 55855008.

The previous prime is 86610961. The next prime is 86611003. The reversal of 86610969 is 96901668.

It is not a de Polignac number, because 86610969 - 23 = 86610961 is a prime.

It is a super-2 number, since 2×866109692 = 15002919902237922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86610961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65614 + ... + 66920.

It is an arithmetic number, because the mean of its divisors is an integer number (5384600).

Almost surely, 286610969 is an apocalyptic number.

It is an amenable number.

86610969 is a deficient number, since it is larger than the sum of its proper divisors (42619431).

86610969 is a wasteful number, since it uses less digits than its factorization.

86610969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549 (or 1546 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 86610969 is about 9306.5014371675. The cubic root of 86610969 is about 442.4433097920.

The spelling of 86610969 in words is "eighty-six million, six hundred ten thousand, nine hundred sixty-nine".

Divisors: 1 3 9 37 111 199 333 597 1307 1791 3921 7363 11763 22089 48359 66267 145077 260093 435231 780279 2340837 9623441 28870323 86610969