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68973693 = 397421563
BaseRepresentation
bin1000001110001…
…11010001111101
311210210020010020
410013013101331
5120124124233
610502202353
71465160325
oct407072175
9153706106
1068973693
1135a2aa58
121b1233b9
131139c649
149236285
1560c69b3
hex41c747d

68973693 has 16 divisors (see below), whose sum is σ = 93299136. Its totient is φ = 45319680.

The previous prime is 68973691. The next prime is 68973701. The reversal of 68973693 is 39637986.

It is a happy number.

It is not a de Polignac number, because 68973693 - 21 = 68973691 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68973691) 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, 122230 + ... + 122792.

It is an arithmetic number, because the mean of its divisors is an integer number (5831196).

Almost surely, 268973693 is an apocalyptic number.

It is an amenable number.

68973693 is a deficient number, since it is larger than the sum of its proper divisors (24325443).

68973693 is a wasteful number, since it uses less digits than its factorization.

68973693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084.

The product of its digits is 1469664, while the sum is 51.

The square root of 68973693 is about 8305.0402166395. The cubic root of 68973693 is about 410.1044607913.

The spelling of 68973693 in words is "sixty-eight million, nine hundred seventy-three thousand, six hundred ninety-three".

Divisors: 1 3 97 291 421 563 1263 1689 40837 54611 122511 163833 237023 711069 22991231 68973693