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68069089 = 1149912401
BaseRepresentation
bin1000000111010…
…10011011100001
311202002021020101
410003222123201
5114411202324
610430542401
71454402104
oct403523341
9152067211
1068069089
1135472350
121a967a01
131114398a
14907c73b
155e98944
hex40ea6e1

68069089 has 8 divisors (see below), whose sum is σ = 74412000. Its totient is φ = 61752000.

The previous prime is 68069063. The next prime is 68069101. The reversal of 68069089 is 98096086.

It is a happy number.

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 68069089 - 29 = 68068577 is a prime.

68069089 is a strobogrammatic number because it is the same when read upside-down.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68019089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 712 + ... + 11689.

It is an arithmetic number, because the mean of its divisors is an integer number (9301500).

Almost surely, 268069089 is an apocalyptic number.

It is an amenable number.

68069089 is a deficient number, since it is larger than the sum of its proper divisors (6342911).

68069089 is a wasteful number, since it uses less digits than its factorization.

68069089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12911.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 68069089 is about 8250.3993236691. The cubic root of 68069089 is about 408.3036974558.

The spelling of 68069089 in words is "sixty-eight million, sixty-nine thousand, eighty-nine".

Divisors: 1 11 499 5489 12401 136411 6188099 68069089